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Finding the Fourth Proportional to 13,914.60, 20,886.48 and 7,339.02

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Solution

The fourth proportional to 13,914.60, 20,886.48 and 7,339.02 is: 11,016.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,914.60 : 20,886.48 = 7,339.02 : x
  2. Step 2: Convert to fraction form
    13,914.60/20,886.48 = 7,339.02/x
  3. Step 3: Cross multiply
    13,914.60x = 20,886.48 × 7,339.02
  4. Step 4: Simplify right side
    13,914.60x = 153,286,294.45
  5. Step 5: Solve for x
    x = 153,286,294.45/13,914.60
  6. Step 6: Final answer
    x = 11,016.22

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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.