Home / 22,787.20-31,399.68-16,809.40

Finding the Fourth Proportional to 22,787.20, 31,399.68 and 16,809.40

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Solution

The fourth proportional to 22,787.20, 31,399.68 and 16,809.40 is: 23,162.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,787.20 : 31,399.68 = 16,809.40 : x
  2. Step 2: Convert to fraction form
    22,787.20/31,399.68 = 16,809.40/x
  3. Step 3: Cross multiply
    22,787.20x = 31,399.68 × 16,809.40
  4. Step 4: Simplify right side
    22,787.20x = 527,809,780.99
  5. Step 5: Solve for x
    x = 527,809,780.99/22,787.20
  6. Step 6: Final answer
    x = 23,162.56

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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.