Home / 28,787.16-39,726.12-16,040.40

Finding the Fourth Proportional to 28,787.16, 39,726.12 and 16,040.40

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Solution

The fourth proportional to 28,787.16, 39,726.12 and 16,040.40 is: 22,135.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.16 : 39,726.12 = 16,040.40 : x
  2. Step 2: Convert to fraction form
    28,787.16/39,726.12 = 16,040.40/x
  3. Step 3: Cross multiply
    28,787.16x = 39,726.12 × 16,040.40
  4. Step 4: Simplify right side
    28,787.16x = 637,222,855.25
  5. Step 5: Solve for x
    x = 637,222,855.25/28,787.16
  6. Step 6: Final answer
    x = 22,135.66

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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.