Home / 31,449.24-43,417.86-20,853.18

Finding the Fourth Proportional to 31,449.24, 43,417.86 and 20,853.18

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Solution

The fourth proportional to 31,449.24, 43,417.86 and 20,853.18 is: 28,789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,449.24 : 43,417.86 = 20,853.18 : x
  2. Step 2: Convert to fraction form
    31,449.24/43,417.86 = 20,853.18/x
  3. Step 3: Cross multiply
    31,449.24x = 43,417.86 × 20,853.18
  4. Step 4: Simplify right side
    31,449.24x = 905,400,449.79
  5. Step 5: Solve for x
    x = 905,400,449.79/31,449.24
  6. Step 6: Final answer
    x = 28,789.26

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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.