Home / 20,401,920.10-30,602,880.15-15,778,383.40

Finding the Fourth Proportional to 20,401,920.10, 30,602,880.15 and 15,778,383.40

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Solution

The fourth proportional to 20,401,920.10, 30,602,880.15 and 15,778,383.40 is: 23,667,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401,920.10 : 30,602,880.15 = 15,778,383.40 : x
  2. Step 2: Convert to fraction form
    20,401,920.10/30,602,880.15 = 15,778,383.40/x
  3. Step 3: Cross multiply
    20,401,920.10x = 30,602,880.15 × 15,778,383.40
  4. Step 4: Simplify right side
    20,401,920.10x = 482,863,976,150,949.50
  5. Step 5: Solve for x
    x = 482,863,976,150,949.50/20,401,920.10
  6. Step 6: Final answer
    x = 23,667,575.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.