Home / 10,228.55-15,355.11-6,931.64

Finding the Fourth Proportional to 10,228.55, 15,355.11 and 6,931.64

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Solution

The fourth proportional to 10,228.55, 15,355.11 and 6,931.64 is: 10,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,228.55 : 15,355.11 = 6,931.64 : x
  2. Step 2: Convert to fraction form
    10,228.55/15,355.11 = 6,931.64/x
  3. Step 3: Cross multiply
    10,228.55x = 15,355.11 × 6,931.64
  4. Step 4: Simplify right side
    10,228.55x = 106,436,017.90
  5. Step 5: Solve for x
    x = 106,436,017.90/10,228.55
  6. Step 6: Final answer
    x = 10,405.78

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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.