Home / 10,223.42-15,330.47-3,978.72

Finding the Fourth Proportional to 10,223.42, 15,330.47 and 3,978.72

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Solution

The fourth proportional to 10,223.42, 15,330.47 and 3,978.72 is: 5,966.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,223.42 : 15,330.47 = 3,978.72 : x
  2. Step 2: Convert to fraction form
    10,223.42/15,330.47 = 3,978.72/x
  3. Step 3: Cross multiply
    10,223.42x = 15,330.47 × 3,978.72
  4. Step 4: Simplify right side
    10,223.42x = 60,995,627.70
  5. Step 5: Solve for x
    x = 60,995,627.70/10,223.42
  6. Step 6: Final answer
    x = 5,966.27

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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.