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Finding the Fourth Proportional to 17,795,937.80, 26,693,906.70 and 6,438,139.40

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Solution

The fourth proportional to 17,795,937.80, 26,693,906.70 and 6,438,139.40 is: 9,657,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,795,937.80 : 26,693,906.70 = 6,438,139.40 : x
  2. Step 2: Convert to fraction form
    17,795,937.80/26,693,906.70 = 6,438,139.40/x
  3. Step 3: Cross multiply
    17,795,937.80x = 26,693,906.70 × 6,438,139.40
  4. Step 4: Simplify right side
    17,795,937.80x = 171,859,092,465,194
  5. Step 5: Solve for x
    x = 171,859,092,465,194/17,795,937.80
  6. Step 6: Final answer
    x = 9,657,209.10

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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.