Home / 20,761.29-31,068.90-17,874.45

Finding the Fourth Proportional to 20,761.29, 31,068.90 and 17,874.45

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Solution

The fourth proportional to 20,761.29, 31,068.90 and 17,874.45 is: 26,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.29 : 31,068.90 = 17,874.45 : x
  2. Step 2: Convert to fraction form
    20,761.29/31,068.90 = 17,874.45/x
  3. Step 3: Cross multiply
    20,761.29x = 31,068.90 × 17,874.45
  4. Step 4: Simplify right side
    20,761.29x = 555,339,499.61
  5. Step 5: Solve for x
    x = 555,339,499.61/20,761.29
  6. Step 6: Final answer
    x = 26,748.80

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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.