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Finding the Fourth Proportional to 17,891.60, 24,686.72 and 10,818.40

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Solution

The fourth proportional to 17,891.60, 24,686.72 and 10,818.40 is: 14,927.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,891.60 : 24,686.72 = 10,818.40 : x
  2. Step 2: Convert to fraction form
    17,891.60/24,686.72 = 10,818.40/x
  3. Step 3: Cross multiply
    17,891.60x = 24,686.72 × 10,818.40
  4. Step 4: Simplify right side
    17,891.60x = 267,070,811.65
  5. Step 5: Solve for x
    x = 267,070,811.65/17,891.60
  6. Step 6: Final answer
    x = 14,927.16

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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.