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Finding the Fourth Proportional to 12,225.25, 16,870.86 and 6,636.25

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Solution

The fourth proportional to 12,225.25, 16,870.86 and 6,636.25 is: 9,158.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.25 : 16,870.86 = 6,636.25 : x
  2. Step 2: Convert to fraction form
    12,225.25/16,870.86 = 6,636.25/x
  3. Step 3: Cross multiply
    12,225.25x = 16,870.86 × 6,636.25
  4. Step 4: Simplify right side
    12,225.25x = 111,959,244.68
  5. Step 5: Solve for x
    x = 111,959,244.68/12,225.25
  6. Step 6: Final answer
    x = 9,158.03

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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.