Home / 27,531.90-38,000.10-18,101.34

Finding the Fourth Proportional to 27,531.90, 38,000.10 and 18,101.34

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Solution

The fourth proportional to 27,531.90, 38,000.10 and 18,101.34 is: 24,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,531.90 : 38,000.10 = 18,101.34 : x
  2. Step 2: Convert to fraction form
    27,531.90/38,000.10 = 18,101.34/x
  3. Step 3: Cross multiply
    27,531.90x = 38,000.10 × 18,101.34
  4. Step 4: Simplify right side
    27,531.90x = 687,852,730.13
  5. Step 5: Solve for x
    x = 687,852,730.13/27,531.90
  6. Step 6: Final answer
    x = 24,983.85

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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.