Home / 20,945.89-31,423.47-6,910.26

Finding the Fourth Proportional to 20,945.89, 31,423.47 and 6,910.26

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Solution

The fourth proportional to 20,945.89, 31,423.47 and 6,910.26 is: 10,366.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.89 : 31,423.47 = 6,910.26 : x
  2. Step 2: Convert to fraction form
    20,945.89/31,423.47 = 6,910.26/x
  3. Step 3: Cross multiply
    20,945.89x = 31,423.47 × 6,910.26
  4. Step 4: Simplify right side
    20,945.89x = 217,144,347.80
  5. Step 5: Solve for x
    x = 217,144,347.80/20,945.89
  6. Step 6: Final answer
    x = 10,366.92

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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.