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Finding the Fourth Proportional to 14,863.60, 20,516.16 and 8,580.16

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Solution

The fourth proportional to 14,863.60, 20,516.16 and 8,580.16 is: 11,843.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,863.60 : 20,516.16 = 8,580.16 : x
  2. Step 2: Convert to fraction form
    14,863.60/20,516.16 = 8,580.16/x
  3. Step 3: Cross multiply
    14,863.60x = 20,516.16 × 8,580.16
  4. Step 4: Simplify right side
    14,863.60x = 176,031,935.39
  5. Step 5: Solve for x
    x = 176,031,935.39/14,863.60
  6. Step 6: Final answer
    x = 11,843.16

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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.