Home / 31,370.12-43,288.80-17,221.76

Finding the Fourth Proportional to 31,370.12, 43,288.80 and 17,221.76

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Solution

The fourth proportional to 31,370.12, 43,288.80 and 17,221.76 is: 23,764.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,370.12 : 43,288.80 = 17,221.76 : x
  2. Step 2: Convert to fraction form
    31,370.12/43,288.80 = 17,221.76/x
  3. Step 3: Cross multiply
    31,370.12x = 43,288.80 × 17,221.76
  4. Step 4: Simplify right side
    31,370.12x = 745,509,324.29
  5. Step 5: Solve for x
    x = 745,509,324.29/31,370.12
  6. Step 6: Final answer
    x = 23,764.95

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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.