Home / 20,401,905.60-30,602,858.40-15,778,368.90

Finding the Fourth Proportional to 20,401,905.60, 30,602,858.40 and 15,778,368.90

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Solution

The fourth proportional to 20,401,905.60, 30,602,858.40 and 15,778,368.90 is: 23,667,553.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401,905.60 : 30,602,858.40 = 15,778,368.90 : x
  2. Step 2: Convert to fraction form
    20,401,905.60/30,602,858.40 = 15,778,368.90/x
  3. Step 3: Cross multiply
    20,401,905.60x = 30,602,858.40 × 15,778,368.90
  4. Step 4: Simplify right side
    20,401,905.60x = 482,863,189,229,663.75
  5. Step 5: Solve for x
    x = 482,863,189,229,663.75/20,401,905.60
  6. Step 6: Final answer
    x = 23,667,553.35

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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.