Home / 21,046.39-29,042.80-12,558.13

Finding the Fourth Proportional to 21,046.39, 29,042.80 and 12,558.13

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Solution

The fourth proportional to 21,046.39, 29,042.80 and 12,558.13 is: 17,329.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.39 : 29,042.80 = 12,558.13 : x
  2. Step 2: Convert to fraction form
    21,046.39/29,042.80 = 12,558.13/x
  3. Step 3: Cross multiply
    21,046.39x = 29,042.80 × 12,558.13
  4. Step 4: Simplify right side
    21,046.39x = 364,723,257.96
  5. Step 5: Solve for x
    x = 364,723,257.96/21,046.39
  6. Step 6: Final answer
    x = 17,329.49

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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.