Home / 31,020.87-42,808.92-16,873.71

Finding the Fourth Proportional to 31,020.87, 42,808.92 and 16,873.71

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Solution

The fourth proportional to 31,020.87, 42,808.92 and 16,873.71 is: 23,285.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,020.87 : 42,808.92 = 16,873.71 : x
  2. Step 2: Convert to fraction form
    31,020.87/42,808.92 = 16,873.71/x
  3. Step 3: Cross multiply
    31,020.87x = 42,808.92 × 16,873.71
  4. Step 4: Simplify right side
    31,020.87x = 722,345,301.49
  5. Step 5: Solve for x
    x = 722,345,301.49/31,020.87
  6. Step 6: Final answer
    x = 23,285.78

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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.