Home / 12,082.86-18,128.40-3,764.76

Finding the Fourth Proportional to 12,082.86, 18,128.40 and 3,764.76

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Solution

The fourth proportional to 12,082.86, 18,128.40 and 3,764.76 is: 5,648.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,082.86 : 18,128.40 = 3,764.76 : x
  2. Step 2: Convert to fraction form
    12,082.86/18,128.40 = 3,764.76/x
  3. Step 3: Cross multiply
    12,082.86x = 18,128.40 × 3,764.76
  4. Step 4: Simplify right side
    12,082.86x = 68,249,075.18
  5. Step 5: Solve for x
    x = 68,249,075.18/12,082.86
  6. Step 6: Final answer
    x = 5,648.42

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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.