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Finding the Fourth Proportional to 12,487.60, 17,231.64 and 6,898.24

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Solution

The fourth proportional to 12,487.60, 17,231.64 and 6,898.24 is: 9,518.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.60 : 17,231.64 = 6,898.24 : x
  2. Step 2: Convert to fraction form
    12,487.60/17,231.64 = 6,898.24/x
  3. Step 3: Cross multiply
    12,487.60x = 17,231.64 × 6,898.24
  4. Step 4: Simplify right side
    12,487.60x = 118,867,988.31
  5. Step 5: Solve for x
    x = 118,867,988.31/12,487.60
  6. Step 6: Final answer
    x = 9,518.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.