Home / 15,821.11-21,833.57-8,747.99

Finding the Fourth Proportional to 15,821.11, 21,833.57 and 8,747.99

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Solution

The fourth proportional to 15,821.11, 21,833.57 and 8,747.99 is: 12,072.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.11 : 21,833.57 = 8,747.99 : x
  2. Step 2: Convert to fraction form
    15,821.11/21,833.57 = 8,747.99/x
  3. Step 3: Cross multiply
    15,821.11x = 21,833.57 × 8,747.99
  4. Step 4: Simplify right side
    15,821.11x = 190,999,699.12
  5. Step 5: Solve for x
    x = 190,999,699.12/15,821.11
  6. Step 6: Final answer
    x = 12,072.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.