Home / 21,187.92-31,792.23-8,537.15

Finding the Fourth Proportional to 21,187.92, 31,792.23 and 8,537.15

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Solution

The fourth proportional to 21,187.92, 31,792.23 and 8,537.15 is: 12,809.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.92 : 31,792.23 = 8,537.15 : x
  2. Step 2: Convert to fraction form
    21,187.92/31,792.23 = 8,537.15/x
  3. Step 3: Cross multiply
    21,187.92x = 31,792.23 × 8,537.15
  4. Step 4: Simplify right side
    21,187.92x = 271,414,877.38
  5. Step 5: Solve for x
    x = 271,414,877.38/21,187.92
  6. Step 6: Final answer
    x = 12,809.89

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1.5x scale

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.