Home / 10,129.80-15,196.32-3,889.56

Finding the Fourth Proportional to 10,129.80, 15,196.32 and 3,889.56

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Solution

The fourth proportional to 10,129.80, 15,196.32 and 3,889.56 is: 5,834.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.80 : 15,196.32 = 3,889.56 : x
  2. Step 2: Convert to fraction form
    10,129.80/15,196.32 = 3,889.56/x
  3. Step 3: Cross multiply
    10,129.80x = 15,196.32 × 3,889.56
  4. Step 4: Simplify right side
    10,129.80x = 59,106,998.42
  5. Step 5: Solve for x
    x = 59,106,998.42/10,129.80
  6. Step 6: Final answer
    x = 5,834.96

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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.