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Finding the Fourth Proportional to 15,084.30, 20,816.01 and 8,369.78

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Solution

The fourth proportional to 15,084.30, 20,816.01 and 8,369.78 is: 11,550.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.30 : 20,816.01 = 8,369.78 : x
  2. Step 2: Convert to fraction form
    15,084.30/20,816.01 = 8,369.78/x
  3. Step 3: Cross multiply
    15,084.30x = 20,816.01 × 8,369.78
  4. Step 4: Simplify right side
    15,084.30x = 174,225,445.10
  5. Step 5: Solve for x
    x = 174,225,445.10/15,084.30
  6. Step 6: Final answer
    x = 11,550.12

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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.