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Finding the Fourth Proportional to 14,687.47, 20,269.04 and 8,719.16

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Solution

The fourth proportional to 14,687.47, 20,269.04 and 8,719.16 is: 12,032.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.47 : 20,269.04 = 8,719.16 : x
  2. Step 2: Convert to fraction form
    14,687.47/20,269.04 = 8,719.16/x
  3. Step 3: Cross multiply
    14,687.47x = 20,269.04 × 8,719.16
  4. Step 4: Simplify right side
    14,687.47x = 176,728,923.26
  5. Step 5: Solve for x
    x = 176,728,923.26/14,687.47
  6. Step 6: Final answer
    x = 12,032.63

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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.