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Finding the Fourth Proportional to 10,815.39, 14,925.21 and 5,847.39

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Solution

The fourth proportional to 10,815.39, 14,925.21 and 5,847.39 is: 8,069.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.39 : 14,925.21 = 5,847.39 : x
  2. Step 2: Convert to fraction form
    10,815.39/14,925.21 = 5,847.39/x
  3. Step 3: Cross multiply
    10,815.39x = 14,925.21 × 5,847.39
  4. Step 4: Simplify right side
    10,815.39x = 87,273,523.70
  5. Step 5: Solve for x
    x = 87,273,523.70/10,815.39
  6. Step 6: Final answer
    x = 8,069.38

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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.