Home / 21,511.28-29,687.67-12,437.03

Finding the Fourth Proportional to 21,511.28, 29,687.67 and 12,437.03

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Solution

The fourth proportional to 21,511.28, 29,687.67 and 12,437.03 is: 17,164.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.28 : 29,687.67 = 12,437.03 : x
  2. Step 2: Convert to fraction form
    21,511.28/29,687.67 = 12,437.03/x
  3. Step 3: Cross multiply
    21,511.28x = 29,687.67 × 12,437.03
  4. Step 4: Simplify right side
    21,511.28x = 369,226,293.98
  5. Step 5: Solve for x
    x = 369,226,293.98/21,511.28
  6. Step 6: Final answer
    x = 17,164.31

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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.