Home / 12,132,331.30-18,198,496.95-9,421,982.20

Finding the Fourth Proportional to 12,132,331.30, 18,198,496.95 and 9,421,982.20

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Solution

The fourth proportional to 12,132,331.30, 18,198,496.95 and 9,421,982.20 is: 14,132,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132,331.30 : 18,198,496.95 = 9,421,982.20 : x
  2. Step 2: Convert to fraction form
    12,132,331.30/18,198,496.95 = 9,421,982.20/x
  3. Step 3: Cross multiply
    12,132,331.30x = 18,198,496.95 × 9,421,982.20
  4. Step 4: Simplify right side
    12,132,331.30x = 171,465,914,329,654.28
  5. Step 5: Solve for x
    x = 171,465,914,329,654.28/12,132,331.30
  6. Step 6: Final answer
    x = 14,132,973.30

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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.