Home / 25,913.92-35,781.30-20,238.76

Finding the Fourth Proportional to 25,913.92, 35,781.30 and 20,238.76

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Solution

The fourth proportional to 25,913.92, 35,781.30 and 20,238.76 is: 27,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,913.92 : 35,781.30 = 20,238.76 : x
  2. Step 2: Convert to fraction form
    25,913.92/35,781.30 = 20,238.76/x
  3. Step 3: Cross multiply
    25,913.92x = 35,781.30 × 20,238.76
  4. Step 4: Simplify right side
    25,913.92x = 724,169,143.19
  5. Step 5: Solve for x
    x = 724,169,143.19/25,913.92
  6. Step 6: Final answer
    x = 27,945.18

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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.