Home / 11,128.59-15,355.26-6,348.42

Finding the Fourth Proportional to 11,128.59, 15,355.26 and 6,348.42

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Solution

The fourth proportional to 11,128.59, 15,355.26 and 6,348.42 is: 8,759.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.59 : 15,355.26 = 6,348.42 : x
  2. Step 2: Convert to fraction form
    11,128.59/15,355.26 = 6,348.42/x
  3. Step 3: Cross multiply
    11,128.59x = 15,355.26 × 6,348.42
  4. Step 4: Simplify right side
    11,128.59x = 97,481,639.69
  5. Step 5: Solve for x
    x = 97,481,639.69/11,128.59
  6. Step 6: Final answer
    x = 8,759.57

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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.