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Finding the Fourth Proportional to 12,486.08, 17,230.78 and 6,897.08

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Solution

The fourth proportional to 12,486.08, 17,230.78 and 6,897.08 is: 9,517.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.08 : 17,230.78 = 6,897.08 : x
  2. Step 2: Convert to fraction form
    12,486.08/17,230.78 = 6,897.08/x
  3. Step 3: Cross multiply
    12,486.08x = 17,230.78 × 6,897.08
  4. Step 4: Simplify right side
    12,486.08x = 118,842,068.12
  5. Step 5: Solve for x
    x = 118,842,068.12/12,486.08
  6. Step 6: Final answer
    x = 9,517.96

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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.