Home / 18,899.22-28,350.14-6,420.54

Finding the Fourth Proportional to 18,899.22, 28,350.14 and 6,420.54

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Solution

The fourth proportional to 18,899.22, 28,350.14 and 6,420.54 is: 9,631.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.22 : 28,350.14 = 6,420.54 : x
  2. Step 2: Convert to fraction form
    18,899.22/28,350.14 = 6,420.54/x
  3. Step 3: Cross multiply
    18,899.22x = 28,350.14 × 6,420.54
  4. Step 4: Simplify right side
    18,899.22x = 182,023,175.77
  5. Step 5: Solve for x
    x = 182,023,175.77/18,899.22
  6. Step 6: Final answer
    x = 9,631.25

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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.