Home / 21,034.08-29,016.63-13,761.90

Finding the Fourth Proportional to 21,034.08, 29,016.63 and 13,761.90

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Solution

The fourth proportional to 21,034.08, 29,016.63 and 13,761.90 is: 18,984.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.08 : 29,016.63 = 13,761.90 : x
  2. Step 2: Convert to fraction form
    21,034.08/29,016.63 = 13,761.90/x
  3. Step 3: Cross multiply
    21,034.08x = 29,016.63 × 13,761.90
  4. Step 4: Simplify right side
    21,034.08x = 399,323,960.40
  5. Step 5: Solve for x
    x = 399,323,960.40/21,034.08
  6. Step 6: Final answer
    x = 18,984.62

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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.