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Finding the Fourth Proportional to 13,220.73, 18,244.44 and 7,252.47

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Solution

The fourth proportional to 13,220.73, 18,244.44 and 7,252.47 is: 10,008.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.73 : 18,244.44 = 7,252.47 : x
  2. Step 2: Convert to fraction form
    13,220.73/18,244.44 = 7,252.47/x
  3. Step 3: Cross multiply
    13,220.73x = 18,244.44 × 7,252.47
  4. Step 4: Simplify right side
    13,220.73x = 132,317,253.77
  5. Step 5: Solve for x
    x = 132,317,253.77/13,220.73
  6. Step 6: Final answer
    x = 10,008.32

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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.