Home / 21,564.20-29,758.24-12,132.70

Finding the Fourth Proportional to 21,564.20, 29,758.24 and 12,132.70

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Solution

The fourth proportional to 21,564.20, 29,758.24 and 12,132.70 is: 16,742.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564.20 : 29,758.24 = 12,132.70 : x
  2. Step 2: Convert to fraction form
    21,564.20/29,758.24 = 12,132.70/x
  3. Step 3: Cross multiply
    21,564.20x = 29,758.24 × 12,132.70
  4. Step 4: Simplify right side
    21,564.20x = 361,047,798.45
  5. Step 5: Solve for x
    x = 361,047,798.45/21,564.20
  6. Step 6: Final answer
    x = 16,742.93

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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.