Home / 13,462.28-20,190.28-5,139.24

Finding the Fourth Proportional to 13,462.28, 20,190.28 and 5,139.24

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Solution

The fourth proportional to 13,462.28, 20,190.28 and 5,139.24 is: 7,707.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,462.28 : 20,190.28 = 5,139.24 : x
  2. Step 2: Convert to fraction form
    13,462.28/20,190.28 = 5,139.24/x
  3. Step 3: Cross multiply
    13,462.28x = 20,190.28 × 5,139.24
  4. Step 4: Simplify right side
    13,462.28x = 103,762,694.59
  5. Step 5: Solve for x
    x = 103,762,694.59/13,462.28
  6. Step 6: Final answer
    x = 7,707.66

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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.