Home / 21,418,982.20-32,081,234.10-12,884,433.40

Finding the Fourth Proportional to 21,418,982.20, 32,081,234.10 and 12,884,433.40

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Solution

The fourth proportional to 21,418,982.20, 32,081,234.10 and 12,884,433.40 is: 19,298,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418,982.20 : 32,081,234.10 = 12,884,433.40 : x
  2. Step 2: Convert to fraction form
    21,418,982.20/32,081,234.10 = 12,884,433.40/x
  3. Step 3: Cross multiply
    21,418,982.20x = 32,081,234.10 × 12,884,433.40
  4. Step 4: Simplify right side
    21,418,982.20x = 413,348,524,151,259
  5. Step 5: Solve for x
    x = 413,348,524,151,259/21,418,982.20
  6. Step 6: Final answer
    x = 19,298,233.70

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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.