Home / 25,861.68-35,652.96-21,866.76

Finding the Fourth Proportional to 25,861.68, 35,652.96 and 21,866.76

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Solution

The fourth proportional to 25,861.68, 35,652.96 and 21,866.76 is: 30,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,861.68 : 35,652.96 = 21,866.76 : x
  2. Step 2: Convert to fraction form
    25,861.68/35,652.96 = 21,866.76/x
  3. Step 3: Cross multiply
    25,861.68x = 35,652.96 × 21,866.76
  4. Step 4: Simplify right side
    25,861.68x = 779,614,719.61
  5. Step 5: Solve for x
    x = 779,614,719.61/25,861.68
  6. Step 6: Final answer
    x = 30,145.56

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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.