Home / 11,013.29-15,187.17-9,425.21

Finding the Fourth Proportional to 11,013.29, 15,187.17 and 9,425.21

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Solution

The fourth proportional to 11,013.29, 15,187.17 and 9,425.21 is: 12,997.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,013.29 : 15,187.17 = 9,425.21 : x
  2. Step 2: Convert to fraction form
    11,013.29/15,187.17 = 9,425.21/x
  3. Step 3: Cross multiply
    11,013.29x = 15,187.17 × 9,425.21
  4. Step 4: Simplify right side
    11,013.29x = 143,142,284.88
  5. Step 5: Solve for x
    x = 143,142,284.88/11,013.29
  6. Step 6: Final answer
    x = 12,997.23

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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.