Home / 12,872.83-19,313.14-5,380.02

Finding the Fourth Proportional to 12,872.83, 19,313.14 and 5,380.02

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Solution

The fourth proportional to 12,872.83, 19,313.14 and 5,380.02 is: 8,071.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.83 : 19,313.14 = 5,380.02 : x
  2. Step 2: Convert to fraction form
    12,872.83/19,313.14 = 5,380.02/x
  3. Step 3: Cross multiply
    12,872.83x = 19,313.14 × 5,380.02
  4. Step 4: Simplify right side
    12,872.83x = 103,905,079.46
  5. Step 5: Solve for x
    x = 103,905,079.46/12,872.83
  6. Step 6: Final answer
    x = 8,071.66

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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.