Home / 15,440.48-21,311.28-9,069.92

Finding the Fourth Proportional to 15,440.48, 21,311.28 and 9,069.92

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Solution

The fourth proportional to 15,440.48, 21,311.28 and 9,069.92 is: 12,518.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.48 : 21,311.28 = 9,069.92 : x
  2. Step 2: Convert to fraction form
    15,440.48/21,311.28 = 9,069.92/x
  3. Step 3: Cross multiply
    15,440.48x = 21,311.28 × 9,069.92
  4. Step 4: Simplify right side
    15,440.48x = 193,291,604.70
  5. Step 5: Solve for x
    x = 193,291,604.70/15,440.48
  6. Step 6: Final answer
    x = 12,518.50

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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.