Home / 13,245.60-18,275.68-7,503.20

Finding the Fourth Proportional to 13,245.60, 18,275.68 and 7,503.20

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Solution

The fourth proportional to 13,245.60, 18,275.68 and 7,503.20 is: 10,352.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.60 : 18,275.68 = 7,503.20 : x
  2. Step 2: Convert to fraction form
    13,245.60/18,275.68 = 7,503.20/x
  3. Step 3: Cross multiply
    13,245.60x = 18,275.68 × 7,503.20
  4. Step 4: Simplify right side
    13,245.60x = 137,126,082.18
  5. Step 5: Solve for x
    x = 137,126,082.18/13,245.60
  6. Step 6: Final answer
    x = 10,352.58

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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.