Home / 28,787.01-39,727.20-16,687.89

Finding the Fourth Proportional to 28,787.01, 39,727.20 and 16,687.89

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Solution

The fourth proportional to 28,787.01, 39,727.20 and 16,687.89 is: 23,029.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.01 : 39,727.20 = 16,687.89 : x
  2. Step 2: Convert to fraction form
    28,787.01/39,727.20 = 16,687.89/x
  3. Step 3: Cross multiply
    28,787.01x = 39,727.20 × 16,687.89
  4. Step 4: Simplify right side
    28,787.01x = 662,963,143.61
  5. Step 5: Solve for x
    x = 662,963,143.61/28,787.01
  6. Step 6: Final answer
    x = 23,029.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.