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Finding the Fourth Proportional to 21,482,843.20, 32,224,264.80 and 8,703,764.80

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Solution

The fourth proportional to 21,482,843.20, 32,224,264.80 and 8,703,764.80 is: 13,055,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,482,843.20 : 32,224,264.80 = 8,703,764.80 : x
  2. Step 2: Convert to fraction form
    21,482,843.20/32,224,264.80 = 8,703,764.80/x
  3. Step 3: Cross multiply
    21,482,843.20x = 32,224,264.80 × 8,703,764.80
  4. Step 4: Simplify right side
    21,482,843.20x = 280,472,421,672,119.06
  5. Step 5: Solve for x
    x = 280,472,421,672,119.06/21,482,843.20
  6. Step 6: Final answer
    x = 13,055,647.20

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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.