Home / 13,434.88-20,149.26-5,111.92

Finding the Fourth Proportional to 13,434.88, 20,149.26 and 5,111.92

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Solution

The fourth proportional to 13,434.88, 20,149.26 and 5,111.92 is: 7,666.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.88 : 20,149.26 = 5,111.92 : x
  2. Step 2: Convert to fraction form
    13,434.88/20,149.26 = 5,111.92/x
  3. Step 3: Cross multiply
    13,434.88x = 20,149.26 × 5,111.92
  4. Step 4: Simplify right side
    13,434.88x = 103,001,405.18
  5. Step 5: Solve for x
    x = 103,001,405.18/13,434.88
  6. Step 6: Final answer
    x = 7,666.72

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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.