Home / 25,403.68-35,066.28-20,679.76

Finding the Fourth Proportional to 25,403.68, 35,066.28 and 20,679.76

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Solution

The fourth proportional to 25,403.68, 35,066.28 and 20,679.76 is: 28,545.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,403.68 : 35,066.28 = 20,679.76 : x
  2. Step 2: Convert to fraction form
    25,403.68/35,066.28 = 20,679.76/x
  3. Step 3: Cross multiply
    25,403.68x = 35,066.28 × 20,679.76
  4. Step 4: Simplify right side
    25,403.68x = 725,162,254.49
  5. Step 5: Solve for x
    x = 725,162,254.49/25,403.68
  6. Step 6: Final answer
    x = 28,545.56

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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.