Home / 20,971.33-31,460.13-6,932.81

Finding the Fourth Proportional to 20,971.33, 31,460.13 and 6,932.81

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Solution

The fourth proportional to 20,971.33, 31,460.13 and 6,932.81 is: 10,400.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.33 : 31,460.13 = 6,932.81 : x
  2. Step 2: Convert to fraction form
    20,971.33/31,460.13 = 6,932.81/x
  3. Step 3: Cross multiply
    20,971.33x = 31,460.13 × 6,932.81
  4. Step 4: Simplify right side
    20,971.33x = 218,107,182.52
  5. Step 5: Solve for x
    x = 218,107,182.52/20,971.33
  6. Step 6: Final answer
    x = 10,400.26

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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.