Home / 10,086.50-15,129.81-3,512.81

Finding the Fourth Proportional to 10,086.50, 15,129.81 and 3,512.81

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Solution

The fourth proportional to 10,086.50, 15,129.81 and 3,512.81 is: 5,269.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,086.50 : 15,129.81 = 3,512.81 : x
  2. Step 2: Convert to fraction form
    10,086.50/15,129.81 = 3,512.81/x
  3. Step 3: Cross multiply
    10,086.50x = 15,129.81 × 3,512.81
  4. Step 4: Simplify right side
    10,086.50x = 53,148,072.22
  5. Step 5: Solve for x
    x = 53,148,072.22/10,086.50
  6. Step 6: Final answer
    x = 5,269.23

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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.