Home / 13,803.42-19,046.12-8,139.95

Finding the Fourth Proportional to 13,803.42, 19,046.12 and 8,139.95

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Solution

The fourth proportional to 13,803.42, 19,046.12 and 8,139.95 is: 11,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.42 : 19,046.12 = 8,139.95 : x
  2. Step 2: Convert to fraction form
    13,803.42/19,046.12 = 8,139.95/x
  3. Step 3: Cross multiply
    13,803.42x = 19,046.12 × 8,139.95
  4. Step 4: Simplify right side
    13,803.42x = 155,034,464.49
  5. Step 5: Solve for x
    x = 155,034,464.49/13,803.42
  6. Step 6: Final answer
    x = 11,231.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.