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Finding the Fourth Proportional to 16,385.95, 22,611.94 and 9,215.67

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Solution

The fourth proportional to 16,385.95, 22,611.94 and 9,215.67 is: 12,717.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,385.95 : 22,611.94 = 9,215.67 : x
  2. Step 2: Convert to fraction form
    16,385.95/22,611.94 = 9,215.67/x
  3. Step 3: Cross multiply
    16,385.95x = 22,611.94 × 9,215.67
  4. Step 4: Simplify right side
    16,385.95x = 208,384,154.06
  5. Step 5: Solve for x
    x = 208,384,154.06/16,385.95
  6. Step 6: Final answer
    x = 12,717.25

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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.