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Finding the Fourth Proportional to 15,084.92, 20,816.25 and 9,113.06

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Solution

The fourth proportional to 15,084.92, 20,816.25 and 9,113.06 is: 12,575.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.92 : 20,816.25 = 9,113.06 : x
  2. Step 2: Convert to fraction form
    15,084.92/20,816.25 = 9,113.06/x
  3. Step 3: Cross multiply
    15,084.92x = 20,816.25 × 9,113.06
  4. Step 4: Simplify right side
    15,084.92x = 189,699,735.23
  5. Step 5: Solve for x
    x = 189,699,735.23/15,084.92
  6. Step 6: Final answer
    x = 12,575.46

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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.