Home / 20,773.38-31,110.39-11,398.98

Finding the Fourth Proportional to 20,773.38, 31,110.39 and 11,398.98

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Solution

The fourth proportional to 20,773.38, 31,110.39 and 11,398.98 is: 17,071.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.38 : 31,110.39 = 11,398.98 : x
  2. Step 2: Convert to fraction form
    20,773.38/31,110.39 = 11,398.98/x
  3. Step 3: Cross multiply
    20,773.38x = 31,110.39 × 11,398.98
  4. Step 4: Simplify right side
    20,773.38x = 354,626,713.40
  5. Step 5: Solve for x
    x = 354,626,713.40/20,773.38
  6. Step 6: Final answer
    x = 17,071.21

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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.