Home / 15,457.89-21,316.17-13,227.15

Finding the Fourth Proportional to 15,457.89, 21,316.17 and 13,227.15

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Solution

The fourth proportional to 15,457.89, 21,316.17 and 13,227.15 is: 18,240.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,457.89 : 21,316.17 = 13,227.15 : x
  2. Step 2: Convert to fraction form
    15,457.89/21,316.17 = 13,227.15/x
  3. Step 3: Cross multiply
    15,457.89x = 21,316.17 × 13,227.15
  4. Step 4: Simplify right side
    15,457.89x = 281,952,178.02
  5. Step 5: Solve for x
    x = 281,952,178.02/15,457.89
  6. Step 6: Final answer
    x = 18,240.02

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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.