Home / 10,474.21-15,715.86-5,214.43

Finding the Fourth Proportional to 10,474.21, 15,715.86 and 5,214.43

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Solution

The fourth proportional to 10,474.21, 15,715.86 and 5,214.43 is: 7,823.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,474.21 : 15,715.86 = 5,214.43 : x
  2. Step 2: Convert to fraction form
    10,474.21/15,715.86 = 5,214.43/x
  3. Step 3: Cross multiply
    10,474.21x = 15,715.86 × 5,214.43
  4. Step 4: Simplify right side
    10,474.21x = 81,949,251.86
  5. Step 5: Solve for x
    x = 81,949,251.86/10,474.21
  6. Step 6: Final answer
    x = 7,823.91

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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.