Home / 14,781.20-20,398.05-11,007.60

Finding the Fourth Proportional to 14,781.20, 20,398.05 and 11,007.60

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Solution

The fourth proportional to 14,781.20, 20,398.05 and 11,007.60 is: 15,190.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.20 : 20,398.05 = 11,007.60 : x
  2. Step 2: Convert to fraction form
    14,781.20/20,398.05 = 11,007.60/x
  3. Step 3: Cross multiply
    14,781.20x = 20,398.05 × 11,007.60
  4. Step 4: Simplify right side
    14,781.20x = 224,533,575.18
  5. Step 5: Solve for x
    x = 224,533,575.18/14,781.20
  6. Step 6: Final answer
    x = 15,190.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.