Home / 13,679.38-20,482.05-7,091.72

Finding the Fourth Proportional to 13,679.38, 20,482.05 and 7,091.72

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Solution

The fourth proportional to 13,679.38, 20,482.05 and 7,091.72 is: 10,618.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.38 : 20,482.05 = 7,091.72 : x
  2. Step 2: Convert to fraction form
    13,679.38/20,482.05 = 7,091.72/x
  3. Step 3: Cross multiply
    13,679.38x = 20,482.05 × 7,091.72
  4. Step 4: Simplify right side
    13,679.38x = 145,252,963.63
  5. Step 5: Solve for x
    x = 145,252,963.63/13,679.38
  6. Step 6: Final answer
    x = 10,618.39

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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.