Home / 31,825.80-43,949.15-20,521.74

Finding the Fourth Proportional to 31,825.80, 43,949.15 and 20,521.74

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Solution

The fourth proportional to 31,825.80, 43,949.15 and 20,521.74 is: 28,339.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,825.80 : 43,949.15 = 20,521.74 : x
  2. Step 2: Convert to fraction form
    31,825.80/43,949.15 = 20,521.74/x
  3. Step 3: Cross multiply
    31,825.80x = 43,949.15 × 20,521.74
  4. Step 4: Simplify right side
    31,825.80x = 901,913,029.52
  5. Step 5: Solve for x
    x = 901,913,029.52/31,825.80
  6. Step 6: Final answer
    x = 28,339.05

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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.