Home / 18,269.38-25,211.81-9,885.88

Finding the Fourth Proportional to 18,269.38, 25,211.81 and 9,885.88

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Solution

The fourth proportional to 18,269.38, 25,211.81 and 9,885.88 is: 13,642.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,269.38 : 25,211.81 = 9,885.88 : x
  2. Step 2: Convert to fraction form
    18,269.38/25,211.81 = 9,885.88/x
  3. Step 3: Cross multiply
    18,269.38x = 25,211.81 × 9,885.88
  4. Step 4: Simplify right side
    18,269.38x = 249,240,752.75
  5. Step 5: Solve for x
    x = 249,240,752.75/18,269.38
  6. Step 6: Final answer
    x = 13,642.54

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Half scale
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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.