Home / 18,989.98-26,204.12-11,331.84

Finding the Fourth Proportional to 18,989.98, 26,204.12 and 11,331.84

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Solution

The fourth proportional to 18,989.98, 26,204.12 and 11,331.84 is: 15,636.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.98 : 26,204.12 = 11,331.84 : x
  2. Step 2: Convert to fraction form
    18,989.98/26,204.12 = 11,331.84/x
  3. Step 3: Cross multiply
    18,989.98x = 26,204.12 × 11,331.84
  4. Step 4: Simplify right side
    18,989.98x = 296,940,895.18
  5. Step 5: Solve for x
    x = 296,940,895.18/18,989.98
  6. Step 6: Final answer
    x = 15,636.71

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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.