Home / 20,977.56-31,459.50-6,934.32

Finding the Fourth Proportional to 20,977.56, 31,459.50 and 6,934.32

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Solution

The fourth proportional to 20,977.56, 31,459.50 and 6,934.32 is: 10,399.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.56 : 31,459.50 = 6,934.32 : x
  2. Step 2: Convert to fraction form
    20,977.56/31,459.50 = 6,934.32/x
  3. Step 3: Cross multiply
    20,977.56x = 31,459.50 × 6,934.32
  4. Step 4: Simplify right side
    20,977.56x = 218,150,240.04
  5. Step 5: Solve for x
    x = 218,150,240.04/20,977.56
  6. Step 6: Final answer
    x = 10,399.22

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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.