Home / 18,271.38-25,214.57-9,887.88

Finding the Fourth Proportional to 18,271.38, 25,214.57 and 9,887.88

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Solution

The fourth proportional to 18,271.38, 25,214.57 and 9,887.88 is: 13,645.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.38 : 25,214.57 = 9,887.88 : x
  2. Step 2: Convert to fraction form
    18,271.38/25,214.57 = 9,887.88/x
  3. Step 3: Cross multiply
    18,271.38x = 25,214.57 × 9,887.88
  4. Step 4: Simplify right side
    18,271.38x = 249,318,642.41
  5. Step 5: Solve for x
    x = 249,318,642.41/18,271.38
  6. Step 6: Final answer
    x = 13,645.31

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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.