Home / 10,085.36-15,129.66-3,511.76

Finding the Fourth Proportional to 10,085.36, 15,129.66 and 3,511.76

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Solution

The fourth proportional to 10,085.36, 15,129.66 and 3,511.76 is: 5,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.36 : 15,129.66 = 3,511.76 : x
  2. Step 2: Convert to fraction form
    10,085.36/15,129.66 = 3,511.76/x
  3. Step 3: Cross multiply
    10,085.36x = 15,129.66 × 3,511.76
  4. Step 4: Simplify right side
    10,085.36x = 53,131,734.80
  5. Step 5: Solve for x
    x = 53,131,734.80/10,085.36
  6. Step 6: Final answer
    x = 5,268.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.