Home / 28,785.38-43,149.31-12,154.66

Finding the Fourth Proportional to 28,785.38, 43,149.31 and 12,154.66

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Solution

The fourth proportional to 28,785.38, 43,149.31 and 12,154.66 is: 18,219.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.38 : 43,149.31 = 12,154.66 : x
  2. Step 2: Convert to fraction form
    28,785.38/43,149.31 = 12,154.66/x
  3. Step 3: Cross multiply
    28,785.38x = 43,149.31 × 12,154.66
  4. Step 4: Simplify right side
    28,785.38x = 524,465,054.02
  5. Step 5: Solve for x
    x = 524,465,054.02/28,785.38
  6. Step 6: Final answer
    x = 18,219.84

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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.