Home / 21,706,872.20-32,513,069.10-13,172,323.40

Finding the Fourth Proportional to 21,706,872.20, 32,513,069.10 and 13,172,323.40

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Solution

The fourth proportional to 21,706,872.20, 32,513,069.10 and 13,172,323.40 is: 19,729,819.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,706,872.20 : 32,513,069.10 = 13,172,323.40 : x
  2. Step 2: Convert to fraction form
    21,706,872.20/32,513,069.10 = 13,172,323.40/x
  3. Step 3: Cross multiply
    21,706,872.20x = 32,513,069.10 × 13,172,323.40
  4. Step 4: Simplify right side
    21,706,872.20x = 428,272,660,911,747
  5. Step 5: Solve for x
    x = 428,272,660,911,747/21,706,872.20
  6. Step 6: Final answer
    x = 19,729,819.06

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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.