Home / 21,575.04-29,772.60-12,143.28

Finding the Fourth Proportional to 21,575.04, 29,772.60 and 12,143.28

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Solution

The fourth proportional to 21,575.04, 29,772.60 and 12,143.28 is: 16,757.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,575.04 : 29,772.60 = 12,143.28 : x
  2. Step 2: Convert to fraction form
    21,575.04/29,772.60 = 12,143.28/x
  3. Step 3: Cross multiply
    21,575.04x = 29,772.60 × 12,143.28
  4. Step 4: Simplify right side
    21,575.04x = 361,537,018.13
  5. Step 5: Solve for x
    x = 361,537,018.13/21,575.04
  6. Step 6: Final answer
    x = 16,757.19

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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.