Home / 20,787.80-31,181.88-5,996.76

Finding the Fourth Proportional to 20,787.80, 31,181.88 and 5,996.76

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Solution

The fourth proportional to 20,787.80, 31,181.88 and 5,996.76 is: 8,995.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.80 : 31,181.88 = 5,996.76 : x
  2. Step 2: Convert to fraction form
    20,787.80/31,181.88 = 5,996.76/x
  3. Step 3: Cross multiply
    20,787.80x = 31,181.88 × 5,996.76
  4. Step 4: Simplify right side
    20,787.80x = 186,990,250.71
  5. Step 5: Solve for x
    x = 186,990,250.71/20,787.80
  6. Step 6: Final answer
    x = 8,995.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.