Home / 13,512.69-20,278.01-4,747.61

Finding the Fourth Proportional to 13,512.69, 20,278.01 and 4,747.61

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Solution

The fourth proportional to 13,512.69, 20,278.01 and 4,747.61 is: 7,124.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.69 : 20,278.01 = 4,747.61 : x
  2. Step 2: Convert to fraction form
    13,512.69/20,278.01 = 4,747.61/x
  3. Step 3: Cross multiply
    13,512.69x = 20,278.01 × 4,747.61
  4. Step 4: Simplify right side
    13,512.69x = 96,272,145.62
  5. Step 5: Solve for x
    x = 96,272,145.62/13,512.69
  6. Step 6: Final answer
    x = 7,124.57

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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.