Home / 13,168.05-18,169.79-7,502.91

Finding the Fourth Proportional to 13,168.05, 18,169.79 and 7,502.91

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Solution

The fourth proportional to 13,168.05, 18,169.79 and 7,502.91 is: 10,352.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.05 : 18,169.79 = 7,502.91 : x
  2. Step 2: Convert to fraction form
    13,168.05/18,169.79 = 7,502.91/x
  3. Step 3: Cross multiply
    13,168.05x = 18,169.79 × 7,502.91
  4. Step 4: Simplify right side
    13,168.05x = 136,326,261.57
  5. Step 5: Solve for x
    x = 136,326,261.57/13,168.05
  6. Step 6: Final answer
    x = 10,352.81

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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.