Home / 13,155.66-18,161.19-8,447.94

Finding the Fourth Proportional to 13,155.66, 18,161.19 and 8,447.94

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Solution

The fourth proportional to 13,155.66, 18,161.19 and 8,447.94 is: 11,662.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.66 : 18,161.19 = 8,447.94 : x
  2. Step 2: Convert to fraction form
    13,155.66/18,161.19 = 8,447.94/x
  3. Step 3: Cross multiply
    13,155.66x = 18,161.19 × 8,447.94
  4. Step 4: Simplify right side
    13,155.66x = 153,424,643.45
  5. Step 5: Solve for x
    x = 153,424,643.45/13,155.66
  6. Step 6: Final answer
    x = 11,662.25

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Double scale
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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.