Home / 10,128.68-15,195.26-3,888.70

Finding the Fourth Proportional to 10,128.68, 15,195.26 and 3,888.70

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Solution

The fourth proportional to 10,128.68, 15,195.26 and 3,888.70 is: 5,833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.68 : 15,195.26 = 3,888.70 : x
  2. Step 2: Convert to fraction form
    10,128.68/15,195.26 = 3,888.70/x
  3. Step 3: Cross multiply
    10,128.68x = 15,195.26 × 3,888.70
  4. Step 4: Simplify right side
    10,128.68x = 59,089,862.29
  5. Step 5: Solve for x
    x = 59,089,862.29/10,128.68
  6. Step 6: Final answer
    x = 5,833.92

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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.