Home / 20,930.04-31,391.56-6,890.22

Finding the Fourth Proportional to 20,930.04, 31,391.56 and 6,890.22

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Solution

The fourth proportional to 20,930.04, 31,391.56 and 6,890.22 is: 10,334.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.04 : 31,391.56 = 6,890.22 : x
  2. Step 2: Convert to fraction form
    20,930.04/31,391.56 = 6,890.22/x
  3. Step 3: Cross multiply
    20,930.04x = 31,391.56 × 6,890.22
  4. Step 4: Simplify right side
    20,930.04x = 216,294,754.54
  5. Step 5: Solve for x
    x = 216,294,754.54/20,930.04
  6. Step 6: Final answer
    x = 10,334.18

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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.