Home / 31,477.28-43,439.68-17,331.20

Finding the Fourth Proportional to 31,477.28, 43,439.68 and 17,331.20

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Solution

The fourth proportional to 31,477.28, 43,439.68 and 17,331.20 is: 23,917.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,477.28 : 43,439.68 = 17,331.20 : x
  2. Step 2: Convert to fraction form
    31,477.28/43,439.68 = 17,331.20/x
  3. Step 3: Cross multiply
    31,477.28x = 43,439.68 × 17,331.20
  4. Step 4: Simplify right side
    31,477.28x = 752,861,782.02
  5. Step 5: Solve for x
    x = 752,861,782.02/31,477.28
  6. Step 6: Final answer
    x = 23,917.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.