Home / 28,787.66-39,726.81-16,040.90

Finding the Fourth Proportional to 28,787.66, 39,726.81 and 16,040.90

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Solution

The fourth proportional to 28,787.66, 39,726.81 and 16,040.90 is: 22,136.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.66 : 39,726.81 = 16,040.90 : x
  2. Step 2: Convert to fraction form
    28,787.66/39,726.81 = 16,040.90/x
  3. Step 3: Cross multiply
    28,787.66x = 39,726.81 × 16,040.90
  4. Step 4: Simplify right side
    28,787.66x = 637,253,786.53
  5. Step 5: Solve for x
    x = 637,253,786.53/28,787.66
  6. Step 6: Final answer
    x = 22,136.35

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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.