Home / 17,280.81-25,921.20-5,434.53

Finding the Fourth Proportional to 17,280.81, 25,921.20 and 5,434.53

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Solution

The fourth proportional to 17,280.81, 25,921.20 and 5,434.53 is: 8,151.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,280.81 : 25,921.20 = 5,434.53 : x
  2. Step 2: Convert to fraction form
    17,280.81/25,921.20 = 5,434.53/x
  3. Step 3: Cross multiply
    17,280.81x = 25,921.20 × 5,434.53
  4. Step 4: Simplify right side
    17,280.81x = 140,869,539.04
  5. Step 5: Solve for x
    x = 140,869,539.04/17,280.81
  6. Step 6: Final answer
    x = 8,151.79

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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.