Home / 20,807.19-31,209.55-6,015.78

Finding the Fourth Proportional to 20,807.19, 31,209.55 and 6,015.78

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Solution

The fourth proportional to 20,807.19, 31,209.55 and 6,015.78 is: 9,023.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.19 : 31,209.55 = 6,015.78 : x
  2. Step 2: Convert to fraction form
    20,807.19/31,209.55 = 6,015.78/x
  3. Step 3: Cross multiply
    20,807.19x = 31,209.55 × 6,015.78
  4. Step 4: Simplify right side
    20,807.19x = 187,749,786.70
  5. Step 5: Solve for x
    x = 187,749,786.70/20,807.19
  6. Step 6: Final answer
    x = 9,023.31

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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.