Home / 12,822.22-19,218.75-5,422.06

Finding the Fourth Proportional to 12,822.22, 19,218.75 and 5,422.06

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Solution

The fourth proportional to 12,822.22, 19,218.75 and 5,422.06 is: 8,126.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,822.22 : 19,218.75 = 5,422.06 : x
  2. Step 2: Convert to fraction form
    12,822.22/19,218.75 = 5,422.06/x
  3. Step 3: Cross multiply
    12,822.22x = 19,218.75 × 5,422.06
  4. Step 4: Simplify right side
    12,822.22x = 104,205,215.63
  5. Step 5: Solve for x
    x = 104,205,215.63/12,822.22
  6. Step 6: Final answer
    x = 8,126.92

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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.