Home / 18,940.76-26,139.44-10,442.84

Finding the Fourth Proportional to 18,940.76, 26,139.44 and 10,442.84

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Solution

The fourth proportional to 18,940.76, 26,139.44 and 10,442.84 is: 14,411.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.76 : 26,139.44 = 10,442.84 : x
  2. Step 2: Convert to fraction form
    18,940.76/26,139.44 = 10,442.84/x
  3. Step 3: Cross multiply
    18,940.76x = 26,139.44 × 10,442.84
  4. Step 4: Simplify right side
    18,940.76x = 272,969,989.61
  5. Step 5: Solve for x
    x = 272,969,989.61/18,940.76
  6. Step 6: Final answer
    x = 14,411.78

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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.