Home / 28,078,855.88-42,112,957.25-13,687,449.80

Finding the Fourth Proportional to 28,078,855.88, 42,112,957.25 and 13,687,449.80

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Solution

The fourth proportional to 28,078,855.88, 42,112,957.25 and 13,687,449.80 is: 20,528,578.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078,855.88 : 42,112,957.25 = 13,687,449.80 : x
  2. Step 2: Convert to fraction form
    28,078,855.88/42,112,957.25 = 13,687,449.80/x
  3. Step 3: Cross multiply
    28,078,855.88x = 42,112,957.25 × 13,687,449.80
  4. Step 4: Simplify right side
    28,078,855.88x = 576,418,988,112,574.88
  5. Step 5: Solve for x
    x = 576,418,988,112,574.88/28,078,855.88
  6. Step 6: Final answer
    x = 20,528,578.18

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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.