Home / 13,144-19,706.28-7,948.72

Finding the Fourth Proportional to 13,144, 19,706.28 and 7,948.72

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Solution

The fourth proportional to 13,144, 19,706.28 and 7,948.72 is: 11,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144 : 19,706.28 = 7,948.72 : x
  2. Step 2: Convert to fraction form
    13,144/19,706.28 = 7,948.72/x
  3. Step 3: Cross multiply
    13,144x = 19,706.28 × 7,948.72
  4. Step 4: Simplify right side
    13,144x = 156,639,701.96
  5. Step 5: Solve for x
    x = 156,639,701.96/13,144
  6. Step 6: Final answer
    x = 11,917.20

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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.