Home / 31,315.80-43,216.17-17,888.85

Finding the Fourth Proportional to 31,315.80, 43,216.17 and 17,888.85

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Solution

The fourth proportional to 31,315.80, 43,216.17 and 17,888.85 is: 24,686.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.80 : 43,216.17 = 17,888.85 : x
  2. Step 2: Convert to fraction form
    31,315.80/43,216.17 = 17,888.85/x
  3. Step 3: Cross multiply
    31,315.80x = 43,216.17 × 17,888.85
  4. Step 4: Simplify right side
    31,315.80x = 773,087,582.70
  5. Step 5: Solve for x
    x = 773,087,582.70/31,315.80
  6. Step 6: Final answer
    x = 24,686.82

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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.