Home / 15,419.71-21,273.51-10,121.73

Finding the Fourth Proportional to 15,419.71, 21,273.51 and 10,121.73

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Solution

The fourth proportional to 15,419.71, 21,273.51 and 10,121.73 is: 13,964.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.71 : 21,273.51 = 10,121.73 : x
  2. Step 2: Convert to fraction form
    15,419.71/21,273.51 = 10,121.73/x
  3. Step 3: Cross multiply
    15,419.71x = 21,273.51 × 10,121.73
  4. Step 4: Simplify right side
    15,419.71x = 215,324,724.37
  5. Step 5: Solve for x
    x = 215,324,724.37/15,419.71
  6. Step 6: Final answer
    x = 13,964.25

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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.