Home / 21,199.72-31,798.62-8,724.52

Finding the Fourth Proportional to 21,199.72, 31,798.62 and 8,724.52

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Solution

The fourth proportional to 21,199.72, 31,798.62 and 8,724.52 is: 13,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,199.72 : 31,798.62 = 8,724.52 : x
  2. Step 2: Convert to fraction form
    21,199.72/31,798.62 = 8,724.52/x
  3. Step 3: Cross multiply
    21,199.72x = 31,798.62 × 8,724.52
  4. Step 4: Simplify right side
    21,199.72x = 277,427,696.16
  5. Step 5: Solve for x
    x = 277,427,696.16/21,199.72
  6. Step 6: Final answer
    x = 13,086.38

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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.