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Finding the Fourth Proportional to 16,215.12, 22,376.88 and 8,763.12

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Solution

The fourth proportional to 16,215.12, 22,376.88 and 8,763.12 is: 12,093.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,215.12 : 22,376.88 = 8,763.12 : x
  2. Step 2: Convert to fraction form
    16,215.12/22,376.88 = 8,763.12/x
  3. Step 3: Cross multiply
    16,215.12x = 22,376.88 × 8,763.12
  4. Step 4: Simplify right side
    16,215.12x = 196,091,284.67
  5. Step 5: Solve for x
    x = 196,091,284.67/16,215.12
  6. Step 6: Final answer
    x = 12,093.11

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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.