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Finding the Fourth Proportional to 17,185.80, 23,711 and 9,631.12

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Solution

The fourth proportional to 17,185.80, 23,711 and 9,631.12 is: 13,287.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,185.80 : 23,711 = 9,631.12 : x
  2. Step 2: Convert to fraction form
    17,185.80/23,711 = 9,631.12/x
  3. Step 3: Cross multiply
    17,185.80x = 23,711 × 9,631.12
  4. Step 4: Simplify right side
    17,185.80x = 228,363,486.32
  5. Step 5: Solve for x
    x = 228,363,486.32/17,185.80
  6. Step 6: Final answer
    x = 13,287.92

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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.