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Finding the Fourth Proportional to 12,303.30, 16,979.97 and 6,998.95

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Solution

The fourth proportional to 12,303.30, 16,979.97 and 6,998.95 is: 9,659.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303.30 : 16,979.97 = 6,998.95 : x
  2. Step 2: Convert to fraction form
    12,303.30/16,979.97 = 6,998.95/x
  3. Step 3: Cross multiply
    12,303.30x = 16,979.97 × 6,998.95
  4. Step 4: Simplify right side
    12,303.30x = 118,841,961.03
  5. Step 5: Solve for x
    x = 118,841,961.03/12,303.30
  6. Step 6: Final answer
    x = 9,659.36

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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.