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Finding the Fourth Proportional to 16,659.20, 25,017.60 and 16,140.80

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Solution

The fourth proportional to 16,659.20, 25,017.60 and 16,140.80 is: 24,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,659.20 : 25,017.60 = 16,140.80 : x
  2. Step 2: Convert to fraction form
    16,659.20/25,017.60 = 16,140.80/x
  3. Step 3: Cross multiply
    16,659.20x = 25,017.60 × 16,140.80
  4. Step 4: Simplify right side
    16,659.20x = 403,804,078.08
  5. Step 5: Solve for x
    x = 403,804,078.08/16,659.20
  6. Step 6: Final answer
    x = 24,239.10

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1.5x scale

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.