Home / 13,330.26-18,399.32-7,665.63

Finding the Fourth Proportional to 13,330.26, 18,399.32 and 7,665.63

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Solution

The fourth proportional to 13,330.26, 18,399.32 and 7,665.63 is: 10,580.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.26 : 18,399.32 = 7,665.63 : x
  2. Step 2: Convert to fraction form
    13,330.26/18,399.32 = 7,665.63/x
  3. Step 3: Cross multiply
    13,330.26x = 18,399.32 × 7,665.63
  4. Step 4: Simplify right side
    13,330.26x = 141,042,398.54
  5. Step 5: Solve for x
    x = 141,042,398.54/13,330.26
  6. Step 6: Final answer
    x = 10,580.62

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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.