Home / 31,582.80-43,589.88-18,836.76

Finding the Fourth Proportional to 31,582.80, 43,589.88 and 18,836.76

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Solution

The fourth proportional to 31,582.80, 43,589.88 and 18,836.76 is: 25,998.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,582.80 : 43,589.88 = 18,836.76 : x
  2. Step 2: Convert to fraction form
    31,582.80/43,589.88 = 18,836.76/x
  3. Step 3: Cross multiply
    31,582.80x = 43,589.88 × 18,836.76
  4. Step 4: Simplify right side
    31,582.80x = 821,092,107.99
  5. Step 5: Solve for x
    x = 821,092,107.99/31,582.80
  6. Step 6: Final answer
    x = 25,998.08

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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.