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Finding the Fourth Proportional to 12,212.16, 16,852.92 and 6,623.28

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Solution

The fourth proportional to 12,212.16, 16,852.92 and 6,623.28 is: 9,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.16 : 16,852.92 = 6,623.28 : x
  2. Step 2: Convert to fraction form
    12,212.16/16,852.92 = 6,623.28/x
  3. Step 3: Cross multiply
    12,212.16x = 16,852.92 × 6,623.28
  4. Step 4: Simplify right side
    12,212.16x = 111,621,607.98
  5. Step 5: Solve for x
    x = 111,621,607.98/12,212.16
  6. Step 6: Final answer
    x = 9,140.20

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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.