Home / 13,156.05-18,158.66-8,448.54

Finding the Fourth Proportional to 13,156.05, 18,158.66 and 8,448.54

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Solution

The fourth proportional to 13,156.05, 18,158.66 and 8,448.54 is: 11,661.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.05 : 18,158.66 = 8,448.54 : x
  2. Step 2: Convert to fraction form
    13,156.05/18,158.66 = 8,448.54/x
  3. Step 3: Cross multiply
    13,156.05x = 18,158.66 × 8,448.54
  4. Step 4: Simplify right side
    13,156.05x = 153,414,134.22
  5. Step 5: Solve for x
    x = 153,414,134.22/13,156.05
  6. Step 6: Final answer
    x = 11,661.11

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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.