Home / 29,217.60-40,276.80-20,707.20

Finding the Fourth Proportional to 29,217.60, 40,276.80 and 20,707.20

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Solution

The fourth proportional to 29,217.60, 40,276.80 and 20,707.20 is: 28,545.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,217.60 : 40,276.80 = 20,707.20 : x
  2. Step 2: Convert to fraction form
    29,217.60/40,276.80 = 20,707.20/x
  3. Step 3: Cross multiply
    29,217.60x = 40,276.80 × 20,707.20
  4. Step 4: Simplify right side
    29,217.60x = 834,019,752.96
  5. Step 5: Solve for x
    x = 834,019,752.96/29,217.60
  6. Step 6: Final answer
    x = 28,545.12

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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.