Home / 11,489.09-15,850.79-7,512.50

Finding the Fourth Proportional to 11,489.09, 15,850.79 and 7,512.50

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Solution

The fourth proportional to 11,489.09, 15,850.79 and 7,512.50 is: 10,364.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,489.09 : 15,850.79 = 7,512.50 : x
  2. Step 2: Convert to fraction form
    11,489.09/15,850.79 = 7,512.50/x
  3. Step 3: Cross multiply
    11,489.09x = 15,850.79 × 7,512.50
  4. Step 4: Simplify right side
    11,489.09x = 119,079,000.95
  5. Step 5: Solve for x
    x = 119,079,000.95/11,489.09
  6. Step 6: Final answer
    x = 10,364.53

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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.