Home / 21,456,047.20-32,142,080.40-12,911,000.80

Finding the Fourth Proportional to 21,456,047.20, 32,142,080.40 and 12,911,000.80

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Solution

The fourth proportional to 21,456,047.20, 32,142,080.40 and 12,911,000.80 is: 19,341,233.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456,047.20 : 32,142,080.40 = 12,911,000.80 : x
  2. Step 2: Convert to fraction form
    21,456,047.20/32,142,080.40 = 12,911,000.80/x
  3. Step 3: Cross multiply
    21,456,047.20x = 32,142,080.40 × 12,911,000.80
  4. Step 4: Simplify right side
    21,456,047.20x = 414,986,425,758,064.31
  5. Step 5: Solve for x
    x = 414,986,425,758,064.31/21,456,047.20
  6. Step 6: Final answer
    x = 19,341,233.82

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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.