Home / 20,990.48-31,476.30-6,194.20

Finding the Fourth Proportional to 20,990.48, 31,476.30 and 6,194.20

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Solution

The fourth proportional to 20,990.48, 31,476.30 and 6,194.20 is: 9,288.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,990.48 : 31,476.30 = 6,194.20 : x
  2. Step 2: Convert to fraction form
    20,990.48/31,476.30 = 6,194.20/x
  3. Step 3: Cross multiply
    20,990.48x = 31,476.30 × 6,194.20
  4. Step 4: Simplify right side
    20,990.48x = 194,970,497.46
  5. Step 5: Solve for x
    x = 194,970,497.46/20,990.48
  6. Step 6: Final answer
    x = 9,288.52

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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.