Home / 21,291.24-31,936.86-9,892.02

Finding the Fourth Proportional to 21,291.24, 31,936.86 and 9,892.02

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Solution

The fourth proportional to 21,291.24, 31,936.86 and 9,892.02 is: 14,838.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.24 : 31,936.86 = 9,892.02 : x
  2. Step 2: Convert to fraction form
    21,291.24/31,936.86 = 9,892.02/x
  3. Step 3: Cross multiply
    21,291.24x = 31,936.86 × 9,892.02
  4. Step 4: Simplify right side
    21,291.24x = 315,920,057.86
  5. Step 5: Solve for x
    x = 315,920,057.86/21,291.24
  6. Step 6: Final answer
    x = 14,838.03

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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.