Home / 13,724.22-18,929.88-10,887.61

Finding the Fourth Proportional to 13,724.22, 18,929.88 and 10,887.61

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Solution

The fourth proportional to 13,724.22, 18,929.88 and 10,887.61 is: 15,017.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.22 : 18,929.88 = 10,887.61 : x
  2. Step 2: Convert to fraction form
    13,724.22/18,929.88 = 10,887.61/x
  3. Step 3: Cross multiply
    13,724.22x = 18,929.88 × 10,887.61
  4. Step 4: Simplify right side
    13,724.22x = 206,101,150.79
  5. Step 5: Solve for x
    x = 206,101,150.79/13,724.22
  6. Step 6: Final answer
    x = 15,017.33

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1.5x scale

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.