Home / 18,286.71-27,434.70-5,139.15

Finding the Fourth Proportional to 18,286.71, 27,434.70 and 5,139.15

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Solution

The fourth proportional to 18,286.71, 27,434.70 and 5,139.15 is: 7,710.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.71 : 27,434.70 = 5,139.15 : x
  2. Step 2: Convert to fraction form
    18,286.71/27,434.70 = 5,139.15/x
  3. Step 3: Cross multiply
    18,286.71x = 27,434.70 × 5,139.15
  4. Step 4: Simplify right side
    18,286.71x = 140,991,038.51
  5. Step 5: Solve for x
    x = 140,991,038.51/18,286.71
  6. Step 6: Final answer
    x = 7,710.03

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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.