Home / 31,617.28-43,652.18-20,291.66

Finding the Fourth Proportional to 31,617.28, 43,652.18 and 20,291.66

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Solution

The fourth proportional to 31,617.28, 43,652.18 and 20,291.66 is: 28,015.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,617.28 : 43,652.18 = 20,291.66 : x
  2. Step 2: Convert to fraction form
    31,617.28/43,652.18 = 20,291.66/x
  3. Step 3: Cross multiply
    31,617.28x = 43,652.18 × 20,291.66
  4. Step 4: Simplify right side
    31,617.28x = 885,775,027.29
  5. Step 5: Solve for x
    x = 885,775,027.29/31,617.28
  6. Step 6: Final answer
    x = 28,015.54

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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.