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Finding the Fourth Proportional to 15,211.20, 22,816.48 and 7,003.20

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Solution

The fourth proportional to 15,211.20, 22,816.48 and 7,003.20 is: 10,504.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.20 : 22,816.48 = 7,003.20 : x
  2. Step 2: Convert to fraction form
    15,211.20/22,816.48 = 7,003.20/x
  3. Step 3: Cross multiply
    15,211.20x = 22,816.48 × 7,003.20
  4. Step 4: Simplify right side
    15,211.20x = 159,788,372.74
  5. Step 5: Solve for x
    x = 159,788,372.74/15,211.20
  6. Step 6: Final answer
    x = 10,504.65

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.