Home / 25,495.68-35,187.84-20,105.76

Finding the Fourth Proportional to 25,495.68, 35,187.84 and 20,105.76

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Solution

The fourth proportional to 25,495.68, 35,187.84 and 20,105.76 is: 27,748.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,495.68 : 35,187.84 = 20,105.76 : x
  2. Step 2: Convert to fraction form
    25,495.68/35,187.84 = 20,105.76/x
  3. Step 3: Cross multiply
    25,495.68x = 35,187.84 × 20,105.76
  4. Step 4: Simplify right side
    25,495.68x = 707,478,265.96
  5. Step 5: Solve for x
    x = 707,478,265.96/25,495.68
  6. Step 6: Final answer
    x = 27,748.95

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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.