Home / 11,113.53-15,338.34-6,396.90

Finding the Fourth Proportional to 11,113.53, 15,338.34 and 6,396.90

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Solution

The fourth proportional to 11,113.53, 15,338.34 and 6,396.90 is: 8,828.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,113.53 : 15,338.34 = 6,396.90 : x
  2. Step 2: Convert to fraction form
    11,113.53/15,338.34 = 6,396.90/x
  3. Step 3: Cross multiply
    11,113.53x = 15,338.34 × 6,396.90
  4. Step 4: Simplify right side
    11,113.53x = 98,117,827.15
  5. Step 5: Solve for x
    x = 98,117,827.15/11,113.53
  6. Step 6: Final answer
    x = 8,828.68

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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.