Home / 21,780,136.80-32,670,205.20-20,717,254.80

Finding the Fourth Proportional to 21,780,136.80, 32,670,205.20 and 20,717,254.80

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Solution

The fourth proportional to 21,780,136.80, 32,670,205.20 and 20,717,254.80 is: 31,075,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,136.80 : 32,670,205.20 = 20,717,254.80 : x
  2. Step 2: Convert to fraction form
    21,780,136.80/32,670,205.20 = 20,717,254.80/x
  3. Step 3: Cross multiply
    21,780,136.80x = 32,670,205.20 × 20,717,254.80
  4. Step 4: Simplify right side
    21,780,136.80x = 676,836,965,496,685
  5. Step 5: Solve for x
    x = 676,836,965,496,685/21,780,136.80
  6. Step 6: Final answer
    x = 31,075,882.20

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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.