Home / 31,027.28-42,816.60-16,879.76

Finding the Fourth Proportional to 31,027.28, 42,816.60 and 16,879.76

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Solution

The fourth proportional to 31,027.28, 42,816.60 and 16,879.76 is: 23,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,027.28 : 42,816.60 = 16,879.76 : x
  2. Step 2: Convert to fraction form
    31,027.28/42,816.60 = 16,879.76/x
  3. Step 3: Cross multiply
    31,027.28x = 42,816.60 × 16,879.76
  4. Step 4: Simplify right side
    31,027.28x = 722,733,932.02
  5. Step 5: Solve for x
    x = 722,733,932.02/31,027.28
  6. Step 6: Final answer
    x = 23,293.50

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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.