Home / 13,722.28-18,939.48-7,754.02

Finding the Fourth Proportional to 13,722.28, 18,939.48 and 7,754.02

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Solution

The fourth proportional to 13,722.28, 18,939.48 and 7,754.02 is: 10,702.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.28 : 18,939.48 = 7,754.02 : x
  2. Step 2: Convert to fraction form
    13,722.28/18,939.48 = 7,754.02/x
  3. Step 3: Cross multiply
    13,722.28x = 18,939.48 × 7,754.02
  4. Step 4: Simplify right side
    13,722.28x = 146,857,106.71
  5. Step 5: Solve for x
    x = 146,857,106.71/13,722.28
  6. Step 6: Final answer
    x = 10,702.09

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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.