Home / 20,979.56-31,462.50-6,936.32

Finding the Fourth Proportional to 20,979.56, 31,462.50 and 6,936.32

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Solution

The fourth proportional to 20,979.56, 31,462.50 and 6,936.32 is: 10,402.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.56 : 31,462.50 = 6,936.32 : x
  2. Step 2: Convert to fraction form
    20,979.56/31,462.50 = 6,936.32/x
  3. Step 3: Cross multiply
    20,979.56x = 31,462.50 × 6,936.32
  4. Step 4: Simplify right side
    20,979.56x = 218,233,968
  5. Step 5: Solve for x
    x = 218,233,968/20,979.56
  6. Step 6: Final answer
    x = 10,402.22

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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.