Home / 12,112.88-18,167.16-5,539.28

Finding the Fourth Proportional to 12,112.88, 18,167.16 and 5,539.28

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Solution

The fourth proportional to 12,112.88, 18,167.16 and 5,539.28 is: 8,307.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.88 : 18,167.16 = 5,539.28 : x
  2. Step 2: Convert to fraction form
    12,112.88/18,167.16 = 5,539.28/x
  3. Step 3: Cross multiply
    12,112.88x = 18,167.16 × 5,539.28
  4. Step 4: Simplify right side
    12,112.88x = 100,632,986.04
  5. Step 5: Solve for x
    x = 100,632,986.04/12,112.88
  6. Step 6: Final answer
    x = 8,307.93

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1.5x scale

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.