Home / 13,330.73-18,398.54-10,138.87

Finding the Fourth Proportional to 13,330.73, 18,398.54 and 10,138.87

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Solution

The fourth proportional to 13,330.73, 18,398.54 and 10,138.87 is: 13,993.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.73 : 18,398.54 = 10,138.87 : x
  2. Step 2: Convert to fraction form
    13,330.73/18,398.54 = 10,138.87/x
  3. Step 3: Cross multiply
    13,330.73x = 18,398.54 × 10,138.87
  4. Step 4: Simplify right side
    13,330.73x = 186,540,453.60
  5. Step 5: Solve for x
    x = 186,540,453.60/13,330.73
  6. Step 6: Final answer
    x = 13,993.27

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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.