Home / 21,294.32-31,917.60-8,641.14

Finding the Fourth Proportional to 21,294.32, 31,917.60 and 8,641.14

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Solution

The fourth proportional to 21,294.32, 31,917.60 and 8,641.14 is: 12,952.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.32 : 31,917.60 = 8,641.14 : x
  2. Step 2: Convert to fraction form
    21,294.32/31,917.60 = 8,641.14/x
  3. Step 3: Cross multiply
    21,294.32x = 31,917.60 × 8,641.14
  4. Step 4: Simplify right side
    21,294.32x = 275,804,450.06
  5. Step 5: Solve for x
    x = 275,804,450.06/21,294.32
  6. Step 6: Final answer
    x = 12,952.02

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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.