Home / 21,258.72-31,876.08-10,168.08

Finding the Fourth Proportional to 21,258.72, 31,876.08 and 10,168.08

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Solution

The fourth proportional to 21,258.72, 31,876.08 and 10,168.08 is: 15,246.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.72 : 31,876.08 = 10,168.08 : x
  2. Step 2: Convert to fraction form
    21,258.72/31,876.08 = 10,168.08/x
  3. Step 3: Cross multiply
    21,258.72x = 31,876.08 × 10,168.08
  4. Step 4: Simplify right side
    21,258.72x = 324,118,531.53
  5. Step 5: Solve for x
    x = 324,118,531.53/21,258.72
  6. Step 6: Final answer
    x = 15,246.38

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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.