Home / 13,115.45-18,097.75-7,448.15

Finding the Fourth Proportional to 13,115.45, 18,097.75 and 7,448.15

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Solution

The fourth proportional to 13,115.45, 18,097.75 and 7,448.15 is: 10,277.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.45 : 18,097.75 = 7,448.15 : x
  2. Step 2: Convert to fraction form
    13,115.45/18,097.75 = 7,448.15/x
  3. Step 3: Cross multiply
    13,115.45x = 18,097.75 × 7,448.15
  4. Step 4: Simplify right side
    13,115.45x = 134,794,756.66
  5. Step 5: Solve for x
    x = 134,794,756.66/13,115.45
  6. Step 6: Final answer
    x = 10,277.55

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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.