Home / 18,742.20-28,108.80-10,827.60

Finding the Fourth Proportional to 18,742.20, 28,108.80 and 10,827.60

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Solution

The fourth proportional to 18,742.20, 28,108.80 and 10,827.60 is: 16,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.20 : 28,108.80 = 10,827.60 : x
  2. Step 2: Convert to fraction form
    18,742.20/28,108.80 = 10,827.60/x
  3. Step 3: Cross multiply
    18,742.20x = 28,108.80 × 10,827.60
  4. Step 4: Simplify right side
    18,742.20x = 304,350,842.88
  5. Step 5: Solve for x
    x = 304,350,842.88/18,742.20
  6. Step 6: Final answer
    x = 16,238.80

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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.