Home / 10,081.13-15,121.89-3,155.63

Finding the Fourth Proportional to 10,081.13, 15,121.89 and 3,155.63

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Solution

The fourth proportional to 10,081.13, 15,121.89 and 3,155.63 is: 4,733.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.13 : 15,121.89 = 3,155.63 : x
  2. Step 2: Convert to fraction form
    10,081.13/15,121.89 = 3,155.63/x
  3. Step 3: Cross multiply
    10,081.13x = 15,121.89 × 3,155.63
  4. Step 4: Simplify right side
    10,081.13x = 47,719,014.13
  5. Step 5: Solve for x
    x = 47,719,014.13/10,081.13
  6. Step 6: Final answer
    x = 4,733.50

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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.