Home / 31,856.48-43,969.20-20,659.04

Finding the Fourth Proportional to 31,856.48, 43,969.20 and 20,659.04

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Solution

The fourth proportional to 31,856.48, 43,969.20 and 20,659.04 is: 28,514.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,856.48 : 43,969.20 = 20,659.04 : x
  2. Step 2: Convert to fraction form
    31,856.48/43,969.20 = 20,659.04/x
  3. Step 3: Cross multiply
    31,856.48x = 43,969.20 × 20,659.04
  4. Step 4: Simplify right side
    31,856.48x = 908,361,461.57
  5. Step 5: Solve for x
    x = 908,361,461.57/31,856.48
  6. Step 6: Final answer
    x = 28,514.18

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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.