Home / 13,426.12-20,139.18-5,104.20

Finding the Fourth Proportional to 13,426.12, 20,139.18 and 5,104.20

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Solution

The fourth proportional to 13,426.12, 20,139.18 and 5,104.20 is: 7,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.12 : 20,139.18 = 5,104.20 : x
  2. Step 2: Convert to fraction form
    13,426.12/20,139.18 = 5,104.20/x
  3. Step 3: Cross multiply
    13,426.12x = 20,139.18 × 5,104.20
  4. Step 4: Simplify right side
    13,426.12x = 102,794,402.56
  5. Step 5: Solve for x
    x = 102,794,402.56/13,426.12
  6. Step 6: Final answer
    x = 7,656.30

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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.