Home / 21,572.24-29,767.40-12,140.64

Finding the Fourth Proportional to 21,572.24, 29,767.40 and 12,140.64

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Solution

The fourth proportional to 21,572.24, 29,767.40 and 12,140.64 is: 16,752.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572.24 : 29,767.40 = 12,140.64 : x
  2. Step 2: Convert to fraction form
    21,572.24/29,767.40 = 12,140.64/x
  3. Step 3: Cross multiply
    21,572.24x = 29,767.40 × 12,140.64
  4. Step 4: Simplify right side
    21,572.24x = 361,395,287.14
  5. Step 5: Solve for x
    x = 361,395,287.14/21,572.24
  6. Step 6: Final answer
    x = 16,752.79

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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.