Home / 13,112.79-18,095.55-7,144.44

Finding the Fourth Proportional to 13,112.79, 18,095.55 and 7,144.44

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Solution

The fourth proportional to 13,112.79, 18,095.55 and 7,144.44 is: 9,859.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.79 : 18,095.55 = 7,144.44 : x
  2. Step 2: Convert to fraction form
    13,112.79/18,095.55 = 7,144.44/x
  3. Step 3: Cross multiply
    13,112.79x = 18,095.55 × 7,144.44
  4. Step 4: Simplify right side
    13,112.79x = 129,282,571.24
  5. Step 5: Solve for x
    x = 129,282,571.24/13,112.79
  6. Step 6: Final answer
    x = 9,859.27

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1.5x scale

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.