Home / 18,098.78-27,131.15-9,331.34

Finding the Fourth Proportional to 18,098.78, 27,131.15 and 9,331.34

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Solution

The fourth proportional to 18,098.78, 27,131.15 and 9,331.34 is: 13,988.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,098.78 : 27,131.15 = 9,331.34 : x
  2. Step 2: Convert to fraction form
    18,098.78/27,131.15 = 9,331.34/x
  3. Step 3: Cross multiply
    18,098.78x = 27,131.15 × 9,331.34
  4. Step 4: Simplify right side
    18,098.78x = 253,169,802.93
  5. Step 5: Solve for x
    x = 253,169,802.93/18,098.78
  6. Step 6: Final answer
    x = 13,988.23

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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.