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Finding the Fourth Proportional to 12,675.47, 17,492.09 and 7,086.47

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Solution

The fourth proportional to 12,675.47, 17,492.09 and 7,086.47 is: 9,779.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,675.47 : 17,492.09 = 7,086.47 : x
  2. Step 2: Convert to fraction form
    12,675.47/17,492.09 = 7,086.47/x
  3. Step 3: Cross multiply
    12,675.47x = 17,492.09 × 7,086.47
  4. Step 4: Simplify right side
    12,675.47x = 123,957,048.13
  5. Step 5: Solve for x
    x = 123,957,048.13/12,675.47
  6. Step 6: Final answer
    x = 9,779.29

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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.