Home / 10,121.70-15,182.55-5,200.95

Finding the Fourth Proportional to 10,121.70, 15,182.55 and 5,200.95

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Solution

The fourth proportional to 10,121.70, 15,182.55 and 5,200.95 is: 7,801.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.70 : 15,182.55 = 5,200.95 : x
  2. Step 2: Convert to fraction form
    10,121.70/15,182.55 = 5,200.95/x
  3. Step 3: Cross multiply
    10,121.70x = 15,182.55 × 5,200.95
  4. Step 4: Simplify right side
    10,121.70x = 78,963,683.42
  5. Step 5: Solve for x
    x = 78,963,683.42/10,121.70
  6. Step 6: Final answer
    x = 7,801.43

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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.