Home / 20,987.10-31,473.30-6,192.09

Finding the Fourth Proportional to 20,987.10, 31,473.30 and 6,192.09

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Solution

The fourth proportional to 20,987.10, 31,473.30 and 6,192.09 is: 9,285.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.10 : 31,473.30 = 6,192.09 : x
  2. Step 2: Convert to fraction form
    20,987.10/31,473.30 = 6,192.09/x
  3. Step 3: Cross multiply
    20,987.10x = 31,473.30 × 6,192.09
  4. Step 4: Simplify right side
    20,987.10x = 194,885,506.20
  5. Step 5: Solve for x
    x = 194,885,506.20/20,987.10
  6. Step 6: Final answer
    x = 9,285.97

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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.