Home / 28,363.44-39,141.56-15,787.92

Finding the Fourth Proportional to 28,363.44, 39,141.56 and 15,787.92

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Solution

The fourth proportional to 28,363.44, 39,141.56 and 15,787.92 is: 21,787.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,363.44 : 39,141.56 = 15,787.92 : x
  2. Step 2: Convert to fraction form
    28,363.44/39,141.56 = 15,787.92/x
  3. Step 3: Cross multiply
    28,363.44x = 39,141.56 × 15,787.92
  4. Step 4: Simplify right side
    28,363.44x = 617,963,817.96
  5. Step 5: Solve for x
    x = 617,963,817.96/28,363.44
  6. Step 6: Final answer
    x = 21,787.34

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1.5x scale

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.