Home / 12,868.95-19,303.20-4,103.79

Finding the Fourth Proportional to 12,868.95, 19,303.20 and 4,103.79

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Solution

The fourth proportional to 12,868.95, 19,303.20 and 4,103.79 is: 6,155.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,868.95 : 19,303.20 = 4,103.79 : x
  2. Step 2: Convert to fraction form
    12,868.95/19,303.20 = 4,103.79/x
  3. Step 3: Cross multiply
    12,868.95x = 19,303.20 × 4,103.79
  4. Step 4: Simplify right side
    12,868.95x = 79,216,279.13
  5. Step 5: Solve for x
    x = 79,216,279.13/12,868.95
  6. Step 6: Final answer
    x = 6,155.61

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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.