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Finding the Fourth Proportional to 12,297.38, 16,970.38 and 6,992.55

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Solution

The fourth proportional to 12,297.38, 16,970.38 and 6,992.55 is: 9,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,297.38 : 16,970.38 = 6,992.55 : x
  2. Step 2: Convert to fraction form
    12,297.38/16,970.38 = 6,992.55/x
  3. Step 3: Cross multiply
    12,297.38x = 16,970.38 × 6,992.55
  4. Step 4: Simplify right side
    12,297.38x = 118,666,213.19
  5. Step 5: Solve for x
    x = 118,666,213.19/12,297.38
  6. Step 6: Final answer
    x = 9,649.72

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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.