Home / 20,987.86-31,474.44-6,192.84

Finding the Fourth Proportional to 20,987.86, 31,474.44 and 6,192.84

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Solution

The fourth proportional to 20,987.86, 31,474.44 and 6,192.84 is: 9,287.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.86 : 31,474.44 = 6,192.84 : x
  2. Step 2: Convert to fraction form
    20,987.86/31,474.44 = 6,192.84/x
  3. Step 3: Cross multiply
    20,987.86x = 31,474.44 × 6,192.84
  4. Step 4: Simplify right side
    20,987.86x = 194,916,171.01
  5. Step 5: Solve for x
    x = 194,916,171.01/20,987.86
  6. Step 6: Final answer
    x = 9,287.09

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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.