Home / 15,845.58-21,867.06-8,772.12

Finding the Fourth Proportional to 15,845.58, 21,867.06 and 8,772.12

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Solution

The fourth proportional to 15,845.58, 21,867.06 and 8,772.12 is: 12,105.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,845.58 : 21,867.06 = 8,772.12 : x
  2. Step 2: Convert to fraction form
    15,845.58/21,867.06 = 8,772.12/x
  3. Step 3: Cross multiply
    15,845.58x = 21,867.06 × 8,772.12
  4. Step 4: Simplify right side
    15,845.58x = 191,820,474.37
  5. Step 5: Solve for x
    x = 191,820,474.37/15,845.58
  6. Step 6: Final answer
    x = 12,105.61

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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.