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Finding the Fourth Proportional to 18,516.64, 25,551.80 and 10,558.74

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Solution

The fourth proportional to 18,516.64, 25,551.80 and 10,558.74 is: 14,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,516.64 : 25,551.80 = 10,558.74 : x
  2. Step 2: Convert to fraction form
    18,516.64/25,551.80 = 10,558.74/x
  3. Step 3: Cross multiply
    18,516.64x = 25,551.80 × 10,558.74
  4. Step 4: Simplify right side
    18,516.64x = 269,794,812.73
  5. Step 5: Solve for x
    x = 269,794,812.73/18,516.64
  6. Step 6: Final answer
    x = 14,570.40

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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.