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Finding the Fourth Proportional to 15,146.54, 20,899.05 and 9,177.04

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Solution

The fourth proportional to 15,146.54, 20,899.05 and 9,177.04 is: 12,662.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,146.54 : 20,899.05 = 9,177.04 : x
  2. Step 2: Convert to fraction form
    15,146.54/20,899.05 = 9,177.04/x
  3. Step 3: Cross multiply
    15,146.54x = 20,899.05 × 9,177.04
  4. Step 4: Simplify right side
    15,146.54x = 191,791,313.32
  5. Step 5: Solve for x
    x = 191,791,313.32/15,146.54
  6. Step 6: Final answer
    x = 12,662.39

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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.