Home / 31,455.04-43,470.12-25,780.72

Finding the Fourth Proportional to 31,455.04, 43,470.12 and 25,780.72

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Solution

The fourth proportional to 31,455.04, 43,470.12 and 25,780.72 is: 35,628.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.04 : 43,470.12 = 25,780.72 : x
  2. Step 2: Convert to fraction form
    31,455.04/43,470.12 = 25,780.72/x
  3. Step 3: Cross multiply
    31,455.04x = 43,470.12 × 25,780.72
  4. Step 4: Simplify right side
    31,455.04x = 1,120,690,992.09
  5. Step 5: Solve for x
    x = 1,120,690,992.09/31,455.04
  6. Step 6: Final answer
    x = 35,628.34

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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.