Home / 15,160.92-20,922.29-8,787.98

Finding the Fourth Proportional to 15,160.92, 20,922.29 and 8,787.98

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Solution

The fourth proportional to 15,160.92, 20,922.29 and 8,787.98 is: 12,127.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.92 : 20,922.29 = 8,787.98 : x
  2. Step 2: Convert to fraction form
    15,160.92/20,922.29 = 8,787.98/x
  3. Step 3: Cross multiply
    15,160.92x = 20,922.29 × 8,787.98
  4. Step 4: Simplify right side
    15,160.92x = 183,864,665.61
  5. Step 5: Solve for x
    x = 183,864,665.61/15,160.92
  6. Step 6: Final answer
    x = 12,127.54

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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.