Home / 13,872.17-19,143.68-7,584.55

Finding the Fourth Proportional to 13,872.17, 19,143.68 and 7,584.55

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Solution

The fourth proportional to 13,872.17, 19,143.68 and 7,584.55 is: 10,466.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.17 : 19,143.68 = 7,584.55 : x
  2. Step 2: Convert to fraction form
    13,872.17/19,143.68 = 7,584.55/x
  3. Step 3: Cross multiply
    13,872.17x = 19,143.68 × 7,584.55
  4. Step 4: Simplify right side
    13,872.17x = 145,196,064.50
  5. Step 5: Solve for x
    x = 145,196,064.50/13,872.17
  6. Step 6: Final answer
    x = 10,466.72

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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.