Home / 15,498.15-21,387.20-8,424.75

Finding the Fourth Proportional to 15,498.15, 21,387.20 and 8,424.75

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Solution

The fourth proportional to 15,498.15, 21,387.20 and 8,424.75 is: 11,626.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.15 : 21,387.20 = 8,424.75 : x
  2. Step 2: Convert to fraction form
    15,498.15/21,387.20 = 8,424.75/x
  3. Step 3: Cross multiply
    15,498.15x = 21,387.20 × 8,424.75
  4. Step 4: Simplify right side
    15,498.15x = 180,181,771.08
  5. Step 5: Solve for x
    x = 180,181,771.08/15,498.15
  6. Step 6: Final answer
    x = 11,626.02

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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.