Home / 18,638.05-27,947.49-5,488.71

Finding the Fourth Proportional to 18,638.05, 27,947.49 and 5,488.71

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Solution

The fourth proportional to 18,638.05, 27,947.49 and 5,488.71 is: 8,230.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.05 : 27,947.49 = 5,488.71 : x
  2. Step 2: Convert to fraction form
    18,638.05/27,947.49 = 5,488.71/x
  3. Step 3: Cross multiply
    18,638.05x = 27,947.49 × 5,488.71
  4. Step 4: Simplify right side
    18,638.05x = 153,395,667.84
  5. Step 5: Solve for x
    x = 153,395,667.84/18,638.05
  6. Step 6: Final answer
    x = 8,230.24

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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.