Home / 25,419.68-38,118.72-13,729.76

Finding the Fourth Proportional to 25,419.68, 38,118.72 and 13,729.76

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Solution

The fourth proportional to 25,419.68, 38,118.72 and 13,729.76 is: 20,588.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,419.68 : 38,118.72 = 13,729.76 : x
  2. Step 2: Convert to fraction form
    25,419.68/38,118.72 = 13,729.76/x
  3. Step 3: Cross multiply
    25,419.68x = 38,118.72 × 13,729.76
  4. Step 4: Simplify right side
    25,419.68x = 523,360,877.11
  5. Step 5: Solve for x
    x = 523,360,877.11/25,419.68
  6. Step 6: Final answer
    x = 20,588.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.