Home / 20,787.06-31,191.02-9,694.62

Finding the Fourth Proportional to 20,787.06, 31,191.02 and 9,694.62

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Solution

The fourth proportional to 20,787.06, 31,191.02 and 9,694.62 is: 14,546.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.06 : 31,191.02 = 9,694.62 : x
  2. Step 2: Convert to fraction form
    20,787.06/31,191.02 = 9,694.62/x
  3. Step 3: Cross multiply
    20,787.06x = 31,191.02 × 9,694.62
  4. Step 4: Simplify right side
    20,787.06x = 302,385,037.84
  5. Step 5: Solve for x
    x = 302,385,037.84/20,787.06
  6. Step 6: Final answer
    x = 14,546.79

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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.