Home / 11,109.75-15,330.12-6,329.72

Finding the Fourth Proportional to 11,109.75, 15,330.12 and 6,329.72

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Solution

The fourth proportional to 11,109.75, 15,330.12 and 6,329.72 is: 8,734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.75 : 15,330.12 = 6,329.72 : x
  2. Step 2: Convert to fraction form
    11,109.75/15,330.12 = 6,329.72/x
  3. Step 3: Cross multiply
    11,109.75x = 15,330.12 × 6,329.72
  4. Step 4: Simplify right side
    11,109.75x = 97,035,290.52
  5. Step 5: Solve for x
    x = 97,035,290.52/11,109.75
  6. Step 6: Final answer
    x = 8,734.25

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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.