Home / 12,538.82-18,817.68-4,648.76

Finding the Fourth Proportional to 12,538.82, 18,817.68 and 4,648.76

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Solution

The fourth proportional to 12,538.82, 18,817.68 and 4,648.76 is: 6,976.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.82 : 18,817.68 = 4,648.76 : x
  2. Step 2: Convert to fraction form
    12,538.82/18,817.68 = 4,648.76/x
  3. Step 3: Cross multiply
    12,538.82x = 18,817.68 × 4,648.76
  4. Step 4: Simplify right side
    12,538.82x = 87,478,977.84
  5. Step 5: Solve for x
    x = 87,478,977.84/12,538.82
  6. Step 6: Final answer
    x = 6,976.65

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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.