Home / 20,987.02-31,469.70-6,194.06

Finding the Fourth Proportional to 20,987.02, 31,469.70 and 6,194.06

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Solution

The fourth proportional to 20,987.02, 31,469.70 and 6,194.06 is: 9,287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.02 : 31,469.70 = 6,194.06 : x
  2. Step 2: Convert to fraction form
    20,987.02/31,469.70 = 6,194.06/x
  3. Step 3: Cross multiply
    20,987.02x = 31,469.70 × 6,194.06
  4. Step 4: Simplify right side
    20,987.02x = 194,925,209.98
  5. Step 5: Solve for x
    x = 194,925,209.98/20,987.02
  6. Step 6: Final answer
    x = 9,287.89

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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.