Home / 13,615.47-20,422.80-3,755.34

Finding the Fourth Proportional to 13,615.47, 20,422.80 and 3,755.34

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Solution

The fourth proportional to 13,615.47, 20,422.80 and 3,755.34 is: 5,632.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.47 : 20,422.80 = 3,755.34 : x
  2. Step 2: Convert to fraction form
    13,615.47/20,422.80 = 3,755.34/x
  3. Step 3: Cross multiply
    13,615.47x = 20,422.80 × 3,755.34
  4. Step 4: Simplify right side
    13,615.47x = 76,694,557.75
  5. Step 5: Solve for x
    x = 76,694,557.75/13,615.47
  6. Step 6: Final answer
    x = 5,632.90

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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.