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Finding the Fourth Proportional to 9,353.60, 13,942.96 and 9,211.04

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Solution

The fourth proportional to 9,353.60, 13,942.96 and 9,211.04 is: 13,730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,353.60 : 13,942.96 = 9,211.04 : x
  2. Step 2: Convert to fraction form
    9,353.60/13,942.96 = 9,211.04/x
  3. Step 3: Cross multiply
    9,353.60x = 13,942.96 × 9,211.04
  4. Step 4: Simplify right side
    9,353.60x = 128,429,162.28
  5. Step 5: Solve for x
    x = 128,429,162.28/9,353.60
  6. Step 6: Final answer
    x = 13,730.45

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