Home / 23,111.78-31,894.20-12,501.38

Finding the Fourth Proportional to 23,111.78, 31,894.20 and 12,501.38

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Solution

The fourth proportional to 23,111.78, 31,894.20 and 12,501.38 is: 17,251.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,111.78 : 31,894.20 = 12,501.38 : x
  2. Step 2: Convert to fraction form
    23,111.78/31,894.20 = 12,501.38/x
  3. Step 3: Cross multiply
    23,111.78x = 31,894.20 × 12,501.38
  4. Step 4: Simplify right side
    23,111.78x = 398,721,514.00
  5. Step 5: Solve for x
    x = 398,721,514.00/23,111.78
  6. Step 6: Final answer
    x = 17,251.87

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Half scale
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Double scale
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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.