Home / 25,385.28-38,011.68-20,427.84

Finding the Fourth Proportional to 25,385.28, 38,011.68 and 20,427.84

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Solution

The fourth proportional to 25,385.28, 38,011.68 and 20,427.84 is: 30,588.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,385.28 : 38,011.68 = 20,427.84 : x
  2. Step 2: Convert to fraction form
    25,385.28/38,011.68 = 20,427.84/x
  3. Step 3: Cross multiply
    25,385.28x = 38,011.68 × 20,427.84
  4. Step 4: Simplify right side
    25,385.28x = 776,496,517.17
  5. Step 5: Solve for x
    x = 776,496,517.17/25,385.28
  6. Step 6: Final answer
    x = 30,588.46

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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.