Home / 12,885.48-19,343.61-10,285.11

Finding the Fourth Proportional to 12,885.48, 19,343.61 and 10,285.11

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Solution

The fourth proportional to 12,885.48, 19,343.61 and 10,285.11 is: 15,439.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.48 : 19,343.61 = 10,285.11 : x
  2. Step 2: Convert to fraction form
    12,885.48/19,343.61 = 10,285.11/x
  3. Step 3: Cross multiply
    12,885.48x = 19,343.61 × 10,285.11
  4. Step 4: Simplify right side
    12,885.48x = 198,951,156.65
  5. Step 5: Solve for x
    x = 198,951,156.65/12,885.48
  6. Step 6: Final answer
    x = 15,439.95

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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.