Home / 18,271.11-27,408.40-5,123.44

Finding the Fourth Proportional to 18,271.11, 27,408.40 and 5,123.44

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Solution

The fourth proportional to 18,271.11, 27,408.40 and 5,123.44 is: 7,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.11 : 27,408.40 = 5,123.44 : x
  2. Step 2: Convert to fraction form
    18,271.11/27,408.40 = 5,123.44/x
  3. Step 3: Cross multiply
    18,271.11x = 27,408.40 × 5,123.44
  4. Step 4: Simplify right side
    18,271.11x = 140,425,267.28
  5. Step 5: Solve for x
    x = 140,425,267.28/18,271.11
  6. Step 6: Final answer
    x = 7,685.65

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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.