Home / 12,658.11-18,988.98-3,893.76

Finding the Fourth Proportional to 12,658.11, 18,988.98 and 3,893.76

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Solution

The fourth proportional to 12,658.11, 18,988.98 and 3,893.76 is: 5,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.11 : 18,988.98 = 3,893.76 : x
  2. Step 2: Convert to fraction form
    12,658.11/18,988.98 = 3,893.76/x
  3. Step 3: Cross multiply
    12,658.11x = 18,988.98 × 3,893.76
  4. Step 4: Simplify right side
    12,658.11x = 73,938,530.76
  5. Step 5: Solve for x
    x = 73,938,530.76/12,658.11
  6. Step 6: Final answer
    x = 5,841.20

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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.