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Finding the Fourth Proportional to 17,979,886.80, 26,969,830.20 and 17,681,288.40

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Solution

The fourth proportional to 17,979,886.80, 26,969,830.20 and 17,681,288.40 is: 26,521,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,979,886.80 : 26,969,830.20 = 17,681,288.40 : x
  2. Step 2: Convert to fraction form
    17,979,886.80/26,969,830.20 = 17,681,288.40/x
  3. Step 3: Cross multiply
    17,979,886.80x = 26,969,830.20 × 17,681,288.40
  4. Step 4: Simplify right side
    17,979,886.80x = 476,861,345,865,229.62
  5. Step 5: Solve for x
    x = 476,861,345,865,229.62/17,979,886.80
  6. Step 6: Final answer
    x = 26,521,932.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.