Home / 28,904.10-43,345.35-20,112.90

Finding the Fourth Proportional to 28,904.10, 43,345.35 and 20,112.90

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Solution

The fourth proportional to 28,904.10, 43,345.35 and 20,112.90 is: 30,161.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.10 : 43,345.35 = 20,112.90 : x
  2. Step 2: Convert to fraction form
    28,904.10/43,345.35 = 20,112.90/x
  3. Step 3: Cross multiply
    28,904.10x = 43,345.35 × 20,112.90
  4. Step 4: Simplify right side
    28,904.10x = 871,800,690.02
  5. Step 5: Solve for x
    x = 871,800,690.02/28,904.10
  6. Step 6: Final answer
    x = 30,161.83

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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.