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Finding the Fourth Proportional to 17,471,257.20, 26,206,885.80 and 9,912,985.20

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Solution

The fourth proportional to 17,471,257.20, 26,206,885.80 and 9,912,985.20 is: 14,869,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,471,257.20 : 26,206,885.80 = 9,912,985.20 : x
  2. Step 2: Convert to fraction form
    17,471,257.20/26,206,885.80 = 9,912,985.20/x
  3. Step 3: Cross multiply
    17,471,257.20x = 26,206,885.80 × 9,912,985.20
  4. Step 4: Simplify right side
    17,471,257.20x = 259,788,471,073,490.16
  5. Step 5: Solve for x
    x = 259,788,471,073,490.16/17,471,257.20
  6. Step 6: Final answer
    x = 14,869,477.80

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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.