Home / 13,548.60-20,331-4,790.88

Finding the Fourth Proportional to 13,548.60, 20,331 and 4,790.88

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Solution

The fourth proportional to 13,548.60, 20,331 and 4,790.88 is: 7,189.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,548.60 : 20,331 = 4,790.88 : x
  2. Step 2: Convert to fraction form
    13,548.60/20,331 = 4,790.88/x
  3. Step 3: Cross multiply
    13,548.60x = 20,331 × 4,790.88
  4. Step 4: Simplify right side
    13,548.60x = 97,403,381.28
  5. Step 5: Solve for x
    x = 97,403,381.28/13,548.60
  6. Step 6: Final answer
    x = 7,189.18

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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.