Home / 21,432.93-29,572.66-12,936.43

Finding the Fourth Proportional to 21,432.93, 29,572.66 and 12,936.43

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Solution

The fourth proportional to 21,432.93, 29,572.66 and 12,936.43 is: 17,849.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.93 : 29,572.66 = 12,936.43 : x
  2. Step 2: Convert to fraction form
    21,432.93/29,572.66 = 12,936.43/x
  3. Step 3: Cross multiply
    21,432.93x = 29,572.66 × 12,936.43
  4. Step 4: Simplify right side
    21,432.93x = 382,564,646.00
  5. Step 5: Solve for x
    x = 382,564,646.00/21,432.93
  6. Step 6: Final answer
    x = 17,849.39

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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.