Home / 20,960.48-31,434.03-6,917.90

Finding the Fourth Proportional to 20,960.48, 31,434.03 and 6,917.90

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Solution

The fourth proportional to 20,960.48, 31,434.03 and 6,917.90 is: 10,374.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.48 : 31,434.03 = 6,917.90 : x
  2. Step 2: Convert to fraction form
    20,960.48/31,434.03 = 6,917.90/x
  3. Step 3: Cross multiply
    20,960.48x = 31,434.03 × 6,917.90
  4. Step 4: Simplify right side
    20,960.48x = 217,457,318.97
  5. Step 5: Solve for x
    x = 217,457,318.97/20,960.48
  6. Step 6: Final answer
    x = 10,374.64

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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.