Home / 15,753,291.80-21,739,461.44-9,139,217.78

Finding the Fourth Proportional to 15,753,291.80, 21,739,461.44 and 9,139,217.78

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Solution

The fourth proportional to 15,753,291.80, 21,739,461.44 and 9,139,217.78 is: 12,612,073.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,753,291.80 : 21,739,461.44 = 9,139,217.78 : x
  2. Step 2: Convert to fraction form
    15,753,291.80/21,739,461.44 = 9,139,217.78/x
  3. Step 3: Cross multiply
    15,753,291.80x = 21,739,461.44 × 9,139,217.78
  4. Step 4: Simplify right side
    15,753,291.80x = 198,681,672,520,072.41
  5. Step 5: Solve for x
    x = 198,681,672,520,072.41/15,753,291.80
  6. Step 6: Final answer
    x = 12,612,073.40

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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.