Home / 13,389.44-18,476.11-7,724.71

Finding the Fourth Proportional to 13,389.44, 18,476.11 and 7,724.71

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Solution

The fourth proportional to 13,389.44, 18,476.11 and 7,724.71 is: 10,659.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.44 : 18,476.11 = 7,724.71 : x
  2. Step 2: Convert to fraction form
    13,389.44/18,476.11 = 7,724.71/x
  3. Step 3: Cross multiply
    13,389.44x = 18,476.11 × 7,724.71
  4. Step 4: Simplify right side
    13,389.44x = 142,722,591.68
  5. Step 5: Solve for x
    x = 142,722,591.68/13,389.44
  6. Step 6: Final answer
    x = 10,659.34

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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.