Home / 13,434.56-20,160.80-5,122.24

Finding the Fourth Proportional to 13,434.56, 20,160.80 and 5,122.24

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Solution

The fourth proportional to 13,434.56, 20,160.80 and 5,122.24 is: 7,686.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.56 : 20,160.80 = 5,122.24 : x
  2. Step 2: Convert to fraction form
    13,434.56/20,160.80 = 5,122.24/x
  3. Step 3: Cross multiply
    13,434.56x = 20,160.80 × 5,122.24
  4. Step 4: Simplify right side
    13,434.56x = 103,268,456.19
  5. Step 5: Solve for x
    x = 103,268,456.19/13,434.56
  6. Step 6: Final answer
    x = 7,686.78

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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.