Home / 28,787.40-39,725.88-16,040.64

Finding the Fourth Proportional to 28,787.40, 39,725.88 and 16,040.64

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Solution

The fourth proportional to 28,787.40, 39,725.88 and 16,040.64 is: 22,135.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.40 : 39,725.88 = 16,040.64 : x
  2. Step 2: Convert to fraction form
    28,787.40/39,725.88 = 16,040.64/x
  3. Step 3: Cross multiply
    28,787.40x = 39,725.88 × 16,040.64
  4. Step 4: Simplify right side
    28,787.40x = 637,228,539.76
  5. Step 5: Solve for x
    x = 637,228,539.76/28,787.40
  6. Step 6: Final answer
    x = 22,135.68

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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.