Home / 12,720.11-19,084.14-5,706

Finding the Fourth Proportional to 12,720.11, 19,084.14 and 5,706

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Solution

The fourth proportional to 12,720.11, 19,084.14 and 5,706 is: 8,560.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.11 : 19,084.14 = 5,706 : x
  2. Step 2: Convert to fraction form
    12,720.11/19,084.14 = 5,706/x
  3. Step 3: Cross multiply
    12,720.11x = 19,084.14 × 5,706
  4. Step 4: Simplify right side
    12,720.11x = 108,894,102.84
  5. Step 5: Solve for x
    x = 108,894,102.84/12,720.11
  6. Step 6: Final answer
    x = 8,560.79

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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.