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Finding the Fourth Proportional to 36,230.40, 54,302.40 and 18,691.20

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Solution

The fourth proportional to 36,230.40, 54,302.40 and 18,691.20 is: 28,014.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,230.40 : 54,302.40 = 18,691.20 : x
  2. Step 2: Convert to fraction form
    36,230.40/54,302.40 = 18,691.20/x
  3. Step 3: Cross multiply
    36,230.40x = 54,302.40 × 18,691.20
  4. Step 4: Simplify right side
    36,230.40x = 1,014,977,018.88
  5. Step 5: Solve for x
    x = 1,014,977,018.88/36,230.40
  6. Step 6: Final answer
    x = 28,014.51

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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.