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Finding the Fourth Proportional to 11,687.57, 17,538.26 and 4,670.88

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Solution

The fourth proportional to 11,687.57, 17,538.26 and 4,670.88 is: 7,009.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.57 : 17,538.26 = 4,670.88 : x
  2. Step 2: Convert to fraction form
    11,687.57/17,538.26 = 4,670.88/x
  3. Step 3: Cross multiply
    11,687.57x = 17,538.26 × 4,670.88
  4. Step 4: Simplify right side
    11,687.57x = 81,919,084.51
  5. Step 5: Solve for x
    x = 81,919,084.51/11,687.57
  6. Step 6: Final answer
    x = 7,009.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.