Home / 20,983.13-31,474.69-6,191.84

Finding the Fourth Proportional to 20,983.13, 31,474.69 and 6,191.84

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Solution

The fourth proportional to 20,983.13, 31,474.69 and 6,191.84 is: 9,287.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.13 : 31,474.69 = 6,191.84 : x
  2. Step 2: Convert to fraction form
    20,983.13/31,474.69 = 6,191.84/x
  3. Step 3: Cross multiply
    20,983.13x = 31,474.69 × 6,191.84
  4. Step 4: Simplify right side
    20,983.13x = 194,886,071.68
  5. Step 5: Solve for x
    x = 194,886,071.68/20,983.13
  6. Step 6: Final answer
    x = 9,287.75

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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.