Home / 31,027.08-42,819.12-16,879.68

Finding the Fourth Proportional to 31,027.08, 42,819.12 and 16,879.68

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Solution

The fourth proportional to 31,027.08, 42,819.12 and 16,879.68 is: 23,294.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,027.08 : 42,819.12 = 16,879.68 : x
  2. Step 2: Convert to fraction form
    31,027.08/42,819.12 = 16,879.68/x
  3. Step 3: Cross multiply
    31,027.08x = 42,819.12 × 16,879.68
  4. Step 4: Simplify right side
    31,027.08x = 722,773,043.48
  5. Step 5: Solve for x
    x = 722,773,043.48/31,027.08
  6. Step 6: Final answer
    x = 23,294.91

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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.