Home / 13,425.88-20,140.04-5,526.56

Finding the Fourth Proportional to 13,425.88, 20,140.04 and 5,526.56

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Solution

The fourth proportional to 13,425.88, 20,140.04 and 5,526.56 is: 8,290.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.88 : 20,140.04 = 5,526.56 : x
  2. Step 2: Convert to fraction form
    13,425.88/20,140.04 = 5,526.56/x
  3. Step 3: Cross multiply
    13,425.88x = 20,140.04 × 5,526.56
  4. Step 4: Simplify right side
    13,425.88x = 111,305,139.46
  5. Step 5: Solve for x
    x = 111,305,139.46/13,425.88
  6. Step 6: Final answer
    x = 8,290.34

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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.