Home / 10,419.28-15,628.91-5,223.94

Finding the Fourth Proportional to 10,419.28, 15,628.91 and 5,223.94

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Solution

The fourth proportional to 10,419.28, 15,628.91 and 5,223.94 is: 7,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419.28 : 15,628.91 = 5,223.94 : x
  2. Step 2: Convert to fraction form
    10,419.28/15,628.91 = 5,223.94/x
  3. Step 3: Cross multiply
    10,419.28x = 15,628.91 × 5,223.94
  4. Step 4: Simplify right side
    10,419.28x = 81,644,488.11
  5. Step 5: Solve for x
    x = 81,644,488.11/10,419.28
  6. Step 6: Final answer
    x = 7,835.90

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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.