Home / 13,170.51-18,178.56-7,868.48

Finding the Fourth Proportional to 13,170.51, 18,178.56 and 7,868.48

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Solution

The fourth proportional to 13,170.51, 18,178.56 and 7,868.48 is: 10,860.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.51 : 18,178.56 = 7,868.48 : x
  2. Step 2: Convert to fraction form
    13,170.51/18,178.56 = 7,868.48/x
  3. Step 3: Cross multiply
    13,170.51x = 18,178.56 × 7,868.48
  4. Step 4: Simplify right side
    13,170.51x = 143,037,544.90
  5. Step 5: Solve for x
    x = 143,037,544.90/13,170.51
  6. Step 6: Final answer
    x = 10,860.44

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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.