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Finding the Fourth Proportional to 15,367.71, 21,207.23 and 8,654.00

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Solution

The fourth proportional to 15,367.71, 21,207.23 and 8,654.00 is: 11,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,367.71 : 21,207.23 = 8,654.00 : x
  2. Step 2: Convert to fraction form
    15,367.71/21,207.23 = 8,654.00/x
  3. Step 3: Cross multiply
    15,367.71x = 21,207.23 × 8,654.00
  4. Step 4: Simplify right side
    15,367.71x = 183,527,240.75
  5. Step 5: Solve for x
    x = 183,527,240.75/15,367.71
  6. Step 6: Final answer
    x = 11,942.40

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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.