Home / 28,519.91-42,787.15-11,874.41

Finding the Fourth Proportional to 28,519.91, 42,787.15 and 11,874.41

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Solution

The fourth proportional to 28,519.91, 42,787.15 and 11,874.41 is: 17,814.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.91 : 42,787.15 = 11,874.41 : x
  2. Step 2: Convert to fraction form
    28,519.91/42,787.15 = 11,874.41/x
  3. Step 3: Cross multiply
    28,519.91x = 42,787.15 × 11,874.41
  4. Step 4: Simplify right side
    28,519.91x = 508,071,888.52
  5. Step 5: Solve for x
    x = 508,071,888.52/28,519.91
  6. Step 6: Final answer
    x = 17,814.64

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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.