Home / 11,217.53-15,480.54-6,438.35

Finding the Fourth Proportional to 11,217.53, 15,480.54 and 6,438.35

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Solution

The fourth proportional to 11,217.53, 15,480.54 and 6,438.35 is: 8,885.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,217.53 : 15,480.54 = 6,438.35 : x
  2. Step 2: Convert to fraction form
    11,217.53/15,480.54 = 6,438.35/x
  3. Step 3: Cross multiply
    11,217.53x = 15,480.54 × 6,438.35
  4. Step 4: Simplify right side
    11,217.53x = 99,669,057.31
  5. Step 5: Solve for x
    x = 99,669,057.31/11,217.53
  6. Step 6: Final answer
    x = 8,885.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.