Home / 22,989.24-31,724.42-12,918.28

Finding the Fourth Proportional to 22,989.24, 31,724.42 and 12,918.28

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Solution

The fourth proportional to 22,989.24, 31,724.42 and 12,918.28 is: 17,826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,989.24 : 31,724.42 = 12,918.28 : x
  2. Step 2: Convert to fraction form
    22,989.24/31,724.42 = 12,918.28/x
  3. Step 3: Cross multiply
    22,989.24x = 31,724.42 × 12,918.28
  4. Step 4: Simplify right side
    22,989.24x = 409,824,940.40
  5. Step 5: Solve for x
    x = 409,824,940.40/22,989.24
  6. Step 6: Final answer
    x = 17,826.82

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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.