Home / 13,426.60-20,135.14-5,108.88

Finding the Fourth Proportional to 13,426.60, 20,135.14 and 5,108.88

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Solution

The fourth proportional to 13,426.60, 20,135.14 and 5,108.88 is: 7,661.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.60 : 20,135.14 = 5,108.88 : x
  2. Step 2: Convert to fraction form
    13,426.60/20,135.14 = 5,108.88/x
  3. Step 3: Cross multiply
    13,426.60x = 20,135.14 × 5,108.88
  4. Step 4: Simplify right side
    13,426.60x = 102,868,014.04
  5. Step 5: Solve for x
    x = 102,868,014.04/13,426.60
  6. Step 6: Final answer
    x = 7,661.51

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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.