Home / 15,469.61-21,331.91-9,180.77

Finding the Fourth Proportional to 15,469.61, 21,331.91 and 9,180.77

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Solution

The fourth proportional to 15,469.61, 21,331.91 and 9,180.77 is: 12,659.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,469.61 : 21,331.91 = 9,180.77 : x
  2. Step 2: Convert to fraction form
    15,469.61/21,331.91 = 9,180.77/x
  3. Step 3: Cross multiply
    15,469.61x = 21,331.91 × 9,180.77
  4. Step 4: Simplify right side
    15,469.61x = 195,843,252.71
  5. Step 5: Solve for x
    x = 195,843,252.71/15,469.61
  6. Step 6: Final answer
    x = 12,659.87

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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.