Home / 21,240.77-31,859.09-6,449.82

Finding the Fourth Proportional to 21,240.77, 31,859.09 and 6,449.82

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Solution

The fourth proportional to 21,240.77, 31,859.09 and 6,449.82 is: 9,674.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.77 : 31,859.09 = 6,449.82 : x
  2. Step 2: Convert to fraction form
    21,240.77/31,859.09 = 6,449.82/x
  3. Step 3: Cross multiply
    21,240.77x = 31,859.09 × 6,449.82
  4. Step 4: Simplify right side
    21,240.77x = 205,485,395.86
  5. Step 5: Solve for x
    x = 205,485,395.86/21,240.77
  6. Step 6: Final answer
    x = 9,674.10

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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.