Home / 19,160.96-28,740.26-7,150.78

Finding the Fourth Proportional to 19,160.96, 28,740.26 and 7,150.78

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Solution

The fourth proportional to 19,160.96, 28,740.26 and 7,150.78 is: 10,725.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,160.96 : 28,740.26 = 7,150.78 : x
  2. Step 2: Convert to fraction form
    19,160.96/28,740.26 = 7,150.78/x
  3. Step 3: Cross multiply
    19,160.96x = 28,740.26 × 7,150.78
  4. Step 4: Simplify right side
    19,160.96x = 205,515,132.70
  5. Step 5: Solve for x
    x = 205,515,132.70/19,160.96
  6. Step 6: Final answer
    x = 10,725.72

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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.