Home / 21,061,207.20-31,591,810.80-19,644,031.20

Finding the Fourth Proportional to 21,061,207.20, 31,591,810.80 and 19,644,031.20

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Solution

The fourth proportional to 21,061,207.20, 31,591,810.80 and 19,644,031.20 is: 29,466,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061,207.20 : 31,591,810.80 = 19,644,031.20 : x
  2. Step 2: Convert to fraction form
    21,061,207.20/31,591,810.80 = 19,644,031.20/x
  3. Step 3: Cross multiply
    21,061,207.20x = 31,591,810.80 × 19,644,031.20
  4. Step 4: Simplify right side
    21,061,207.20x = 620,590,517,019,697
  5. Step 5: Solve for x
    x = 620,590,517,019,697/21,061,207.20
  6. Step 6: Final answer
    x = 29,466,046.80

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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.