Home / 21,258.93-31,873.98-11,905.38

Finding the Fourth Proportional to 21,258.93, 31,873.98 and 11,905.38

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Solution

The fourth proportional to 21,258.93, 31,873.98 and 11,905.38 is: 17,850.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.93 : 31,873.98 = 11,905.38 : x
  2. Step 2: Convert to fraction form
    21,258.93/31,873.98 = 11,905.38/x
  3. Step 3: Cross multiply
    21,258.93x = 31,873.98 × 11,905.38
  4. Step 4: Simplify right side
    21,258.93x = 379,471,844.01
  5. Step 5: Solve for x
    x = 379,471,844.01/21,258.93
  6. Step 6: Final answer
    x = 17,850.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.