Home / 13,434.53-20,155.82-5,425.17

Finding the Fourth Proportional to 13,434.53, 20,155.82 and 5,425.17

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Solution

The fourth proportional to 13,434.53, 20,155.82 and 5,425.17 is: 8,139.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.53 : 20,155.82 = 5,425.17 : x
  2. Step 2: Convert to fraction form
    13,434.53/20,155.82 = 5,425.17/x
  3. Step 3: Cross multiply
    13,434.53x = 20,155.82 × 5,425.17
  4. Step 4: Simplify right side
    13,434.53x = 109,348,749.99
  5. Step 5: Solve for x
    x = 109,348,749.99/13,434.53
  6. Step 6: Final answer
    x = 8,139.38

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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.