Home / 31,280.40-43,176.96-18,532.80

Finding the Fourth Proportional to 31,280.40, 43,176.96 and 18,532.80

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Solution

The fourth proportional to 31,280.40, 43,176.96 and 18,532.80 is: 25,581.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,280.40 : 43,176.96 = 18,532.80 : x
  2. Step 2: Convert to fraction form
    31,280.40/43,176.96 = 18,532.80/x
  3. Step 3: Cross multiply
    31,280.40x = 43,176.96 × 18,532.80
  4. Step 4: Simplify right side
    31,280.40x = 800,189,964.29
  5. Step 5: Solve for x
    x = 800,189,964.29/31,280.40
  6. Step 6: Final answer
    x = 25,581.19

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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.