Home / 23,109.17-31,890.66-12,498.80

Finding the Fourth Proportional to 23,109.17, 31,890.66 and 12,498.80

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Solution

The fourth proportional to 23,109.17, 31,890.66 and 12,498.80 is: 17,248.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,109.17 : 31,890.66 = 12,498.80 : x
  2. Step 2: Convert to fraction form
    23,109.17/31,890.66 = 12,498.80/x
  3. Step 3: Cross multiply
    23,109.17x = 31,890.66 × 12,498.80
  4. Step 4: Simplify right side
    23,109.17x = 398,594,981.21
  5. Step 5: Solve for x
    x = 398,594,981.21/23,109.17
  6. Step 6: Final answer
    x = 17,248.35

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Double scale
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Similar ratio
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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.