Home / 31,780.20-43,756.98-26,990.16

Finding the Fourth Proportional to 31,780.20, 43,756.98 and 26,990.16

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Solution

The fourth proportional to 31,780.20, 43,756.98 and 26,990.16 is: 37,161.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,780.20 : 43,756.98 = 26,990.16 : x
  2. Step 2: Convert to fraction form
    31,780.20/43,756.98 = 26,990.16/x
  3. Step 3: Cross multiply
    31,780.20x = 43,756.98 × 26,990.16
  4. Step 4: Simplify right side
    31,780.20x = 1,181,007,891.32
  5. Step 5: Solve for x
    x = 1,181,007,891.32/31,780.20
  6. Step 6: Final answer
    x = 37,161.75

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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.