Home / 10,128.18-13,975.92-6,151.47

Finding the Fourth Proportional to 10,128.18, 13,975.92 and 6,151.47

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Solution

The fourth proportional to 10,128.18, 13,975.92 and 6,151.47 is: 8,488.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.18 : 13,975.92 = 6,151.47 : x
  2. Step 2: Convert to fraction form
    10,128.18/13,975.92 = 6,151.47/x
  3. Step 3: Cross multiply
    10,128.18x = 13,975.92 × 6,151.47
  4. Step 4: Simplify right side
    10,128.18x = 85,972,452.60
  5. Step 5: Solve for x
    x = 85,972,452.60/10,128.18
  6. Step 6: Final answer
    x = 8,488.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.