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Finding the Fourth Proportional to 13,053.54, 18,013.62 and 7,388.19

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Solution

The fourth proportional to 13,053.54, 18,013.62 and 7,388.19 is: 10,195.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.54 : 18,013.62 = 7,388.19 : x
  2. Step 2: Convert to fraction form
    13,053.54/18,013.62 = 7,388.19/x
  3. Step 3: Cross multiply
    13,053.54x = 18,013.62 × 7,388.19
  4. Step 4: Simplify right side
    13,053.54x = 133,088,047.15
  5. Step 5: Solve for x
    x = 133,088,047.15/13,053.54
  6. Step 6: Final answer
    x = 10,195.55

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Half scale
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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.