Home / 13,178.25-18,155.19-9,192.24

Finding the Fourth Proportional to 13,178.25, 18,155.19 and 9,192.24

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Solution

The fourth proportional to 13,178.25, 18,155.19 and 9,192.24 is: 12,663.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.25 : 18,155.19 = 9,192.24 : x
  2. Step 2: Convert to fraction form
    13,178.25/18,155.19 = 9,192.24/x
  3. Step 3: Cross multiply
    13,178.25x = 18,155.19 × 9,192.24
  4. Step 4: Simplify right side
    13,178.25x = 166,886,863.73
  5. Step 5: Solve for x
    x = 166,886,863.73/13,178.25
  6. Step 6: Final answer
    x = 12,663.81

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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.