Home / 16,720.60-25,052.10-8,811.40

Finding the Fourth Proportional to 16,720.60, 25,052.10 and 8,811.40

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Solution

The fourth proportional to 16,720.60, 25,052.10 and 8,811.40 is: 13,201.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,720.60 : 25,052.10 = 8,811.40 : x
  2. Step 2: Convert to fraction form
    16,720.60/25,052.10 = 8,811.40/x
  3. Step 3: Cross multiply
    16,720.60x = 25,052.10 × 8,811.40
  4. Step 4: Simplify right side
    16,720.60x = 220,744,073.94
  5. Step 5: Solve for x
    x = 220,744,073.94/16,720.60
  6. Step 6: Final answer
    x = 13,201.92

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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.