Home / 20,869.32-31,264.75-10,327.11

Finding the Fourth Proportional to 20,869.32, 31,264.75 and 10,327.11

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Solution

The fourth proportional to 20,869.32, 31,264.75 and 10,327.11 is: 15,471.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.32 : 31,264.75 = 10,327.11 : x
  2. Step 2: Convert to fraction form
    20,869.32/31,264.75 = 10,327.11/x
  3. Step 3: Cross multiply
    20,869.32x = 31,264.75 × 10,327.11
  4. Step 4: Simplify right side
    20,869.32x = 322,874,512.37
  5. Step 5: Solve for x
    x = 322,874,512.37/20,869.32
  6. Step 6: Final answer
    x = 15,471.25

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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.