Home / 21,042.26-29,025.51-12,538.79

Finding the Fourth Proportional to 21,042.26, 29,025.51 and 12,538.79

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Solution

The fourth proportional to 21,042.26, 29,025.51 and 12,538.79 is: 17,295.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.26 : 29,025.51 = 12,538.79 : x
  2. Step 2: Convert to fraction form
    21,042.26/29,025.51 = 12,538.79/x
  3. Step 3: Cross multiply
    21,042.26x = 29,025.51 × 12,538.79
  4. Step 4: Simplify right side
    21,042.26x = 363,944,774.53
  5. Step 5: Solve for x
    x = 363,944,774.53/21,042.26
  6. Step 6: Final answer
    x = 17,295.90

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1.5x scale

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.