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Finding the Fourth Proportional to 9,986.60, 14,989.18 and 5,059.74

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Solution

The fourth proportional to 9,986.60, 14,989.18 and 5,059.74 is: 7,594.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.60 : 14,989.18 = 5,059.74 : x
  2. Step 2: Convert to fraction form
    9,986.60/14,989.18 = 5,059.74/x
  3. Step 3: Cross multiply
    9,986.60x = 14,989.18 × 5,059.74
  4. Step 4: Simplify right side
    9,986.60x = 75,841,353.61
  5. Step 5: Solve for x
    x = 75,841,353.61/9,986.60
  6. Step 6: Final answer
    x = 7,594.31

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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.