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Finding the Fourth Proportional to 17,142.08, 23,657.12 and 9,690.08

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Solution

The fourth proportional to 17,142.08, 23,657.12 and 9,690.08 is: 13,372.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,142.08 : 23,657.12 = 9,690.08 : x
  2. Step 2: Convert to fraction form
    17,142.08/23,657.12 = 9,690.08/x
  3. Step 3: Cross multiply
    17,142.08x = 23,657.12 × 9,690.08
  4. Step 4: Simplify right side
    17,142.08x = 229,239,385.37
  5. Step 5: Solve for x
    x = 229,239,385.37/17,142.08
  6. Step 6: Final answer
    x = 13,372.90

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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.