Home / 12,240.81-18,360.79-3,475.70

Finding the Fourth Proportional to 12,240.81, 18,360.79 and 3,475.70

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Solution

The fourth proportional to 12,240.81, 18,360.79 and 3,475.70 is: 5,213.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.81 : 18,360.79 = 3,475.70 : x
  2. Step 2: Convert to fraction form
    12,240.81/18,360.79 = 3,475.70/x
  3. Step 3: Cross multiply
    12,240.81x = 18,360.79 × 3,475.70
  4. Step 4: Simplify right side
    12,240.81x = 63,816,635.02
  5. Step 5: Solve for x
    x = 63,816,635.02/12,240.81
  6. Step 6: Final answer
    x = 5,213.43

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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.