Home / 15,457.59-21,331.85-9,170.01

Finding the Fourth Proportional to 15,457.59, 21,331.85 and 9,170.01

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Solution

The fourth proportional to 15,457.59, 21,331.85 and 9,170.01 is: 12,654.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.59 : 21,331.85 = 9,170.01 : x
  2. Step 2: Convert to fraction form
    15,457.59/21,331.85 = 9,170.01/x
  3. Step 3: Cross multiply
    15,457.59x = 21,331.85 × 9,170.01
  4. Step 4: Simplify right side
    15,457.59x = 195,613,231.97
  5. Step 5: Solve for x
    x = 195,613,231.97/15,457.59
  6. Step 6: Final answer
    x = 12,654.83

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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.