Home / 20,401.90-30,600.42-5,612.32

Finding the Fourth Proportional to 20,401.90, 30,600.42 and 5,612.32

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Solution

The fourth proportional to 20,401.90, 30,600.42 and 5,612.32 is: 8,417.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.90 : 30,600.42 = 5,612.32 : x
  2. Step 2: Convert to fraction form
    20,401.90/30,600.42 = 5,612.32/x
  3. Step 3: Cross multiply
    20,401.90x = 30,600.42 × 5,612.32
  4. Step 4: Simplify right side
    20,401.90x = 171,739,349.17
  5. Step 5: Solve for x
    x = 171,739,349.17/20,401.90
  6. Step 6: Final answer
    x = 8,417.81

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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.