Home / 18,478.45-27,724.02-10,147.87

Finding the Fourth Proportional to 18,478.45, 27,724.02 and 10,147.87

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Solution

The fourth proportional to 18,478.45, 27,724.02 and 10,147.87 is: 15,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.45 : 27,724.02 = 10,147.87 : x
  2. Step 2: Convert to fraction form
    18,478.45/27,724.02 = 10,147.87/x
  3. Step 3: Cross multiply
    18,478.45x = 27,724.02 × 10,147.87
  4. Step 4: Simplify right side
    18,478.45x = 281,339,750.84
  5. Step 5: Solve for x
    x = 281,339,750.84/18,478.45
  6. Step 6: Final answer
    x = 15,225.29

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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.