Home / 10,243.02-15,376.68-8,619.78

Finding the Fourth Proportional to 10,243.02, 15,376.68 and 8,619.78

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Solution

The fourth proportional to 10,243.02, 15,376.68 and 8,619.78 is: 12,939.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,243.02 : 15,376.68 = 8,619.78 : x
  2. Step 2: Convert to fraction form
    10,243.02/15,376.68 = 8,619.78/x
  3. Step 3: Cross multiply
    10,243.02x = 15,376.68 × 8,619.78
  4. Step 4: Simplify right side
    10,243.02x = 132,543,598.73
  5. Step 5: Solve for x
    x = 132,543,598.73/10,243.02
  6. Step 6: Final answer
    x = 12,939.89

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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.