Home / 31,529.60-43,512.90-18,105.20

Finding the Fourth Proportional to 31,529.60, 43,512.90 and 18,105.20

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Solution

The fourth proportional to 31,529.60, 43,512.90 and 18,105.20 is: 24,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,529.60 : 43,512.90 = 18,105.20 : x
  2. Step 2: Convert to fraction form
    31,529.60/43,512.90 = 18,105.20/x
  3. Step 3: Cross multiply
    31,529.60x = 43,512.90 × 18,105.20
  4. Step 4: Simplify right side
    31,529.60x = 787,809,757.08
  5. Step 5: Solve for x
    x = 787,809,757.08/31,529.60
  6. Step 6: Final answer
    x = 24,986.35

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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.