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Finding the Fourth Proportional to 13,552.79, 18,699.19 and 8,243.85

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Solution

The fourth proportional to 13,552.79, 18,699.19 and 8,243.85 is: 11,374.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,552.79 : 18,699.19 = 8,243.85 : x
  2. Step 2: Convert to fraction form
    13,552.79/18,699.19 = 8,243.85/x
  3. Step 3: Cross multiply
    13,552.79x = 18,699.19 × 8,243.85
  4. Step 4: Simplify right side
    13,552.79x = 154,153,349.18
  5. Step 5: Solve for x
    x = 154,153,349.18/13,552.79
  6. Step 6: Final answer
    x = 11,374.29

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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.