Home / 13,727.28-18,943.74-7,439.76

Finding the Fourth Proportional to 13,727.28, 18,943.74 and 7,439.76

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Solution

The fourth proportional to 13,727.28, 18,943.74 and 7,439.76 is: 10,266.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.28 : 18,943.74 = 7,439.76 : x
  2. Step 2: Convert to fraction form
    13,727.28/18,943.74 = 7,439.76/x
  3. Step 3: Cross multiply
    13,727.28x = 18,943.74 × 7,439.76
  4. Step 4: Simplify right side
    13,727.28x = 140,936,879.10
  5. Step 5: Solve for x
    x = 140,936,879.10/13,727.28
  6. Step 6: Final answer
    x = 10,266.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.