Home / 21,140.53-29,169.15-12,641.24

Finding the Fourth Proportional to 21,140.53, 29,169.15 and 12,641.24

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Solution

The fourth proportional to 21,140.53, 29,169.15 and 12,641.24 is: 17,442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.53 : 29,169.15 = 12,641.24 : x
  2. Step 2: Convert to fraction form
    21,140.53/29,169.15 = 12,641.24/x
  3. Step 3: Cross multiply
    21,140.53x = 29,169.15 × 12,641.24
  4. Step 4: Simplify right side
    21,140.53x = 368,734,225.75
  5. Step 5: Solve for x
    x = 368,734,225.75/21,140.53
  6. Step 6: Final answer
    x = 17,442.05

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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.