Home / 13,435.47-20,157.26-5,426.12

Finding the Fourth Proportional to 13,435.47, 20,157.26 and 5,426.12

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Solution

The fourth proportional to 13,435.47, 20,157.26 and 5,426.12 is: 8,140.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.47 : 20,157.26 = 5,426.12 : x
  2. Step 2: Convert to fraction form
    13,435.47/20,157.26 = 5,426.12/x
  3. Step 3: Cross multiply
    13,435.47x = 20,157.26 × 5,426.12
  4. Step 4: Simplify right side
    13,435.47x = 109,375,734.89
  5. Step 5: Solve for x
    x = 109,375,734.89/13,435.47
  6. Step 6: Final answer
    x = 8,140.82

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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.