Home / 12,656-18,984.54-3,892.16

Finding the Fourth Proportional to 12,656, 18,984.54 and 3,892.16

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Solution

The fourth proportional to 12,656, 18,984.54 and 3,892.16 is: 5,838.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656 : 18,984.54 = 3,892.16 : x
  2. Step 2: Convert to fraction form
    12,656/18,984.54 = 3,892.16/x
  3. Step 3: Cross multiply
    12,656x = 18,984.54 × 3,892.16
  4. Step 4: Simplify right side
    12,656x = 73,890,867.21
  5. Step 5: Solve for x
    x = 73,890,867.21/12,656
  6. Step 6: Final answer
    x = 5,838.41

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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.