Home / 20,971.98-31,458.24-6,181.18

Finding the Fourth Proportional to 20,971.98, 31,458.24 and 6,181.18

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Solution

The fourth proportional to 20,971.98, 31,458.24 and 6,181.18 is: 9,271.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.98 : 31,458.24 = 6,181.18 : x
  2. Step 2: Convert to fraction form
    20,971.98/31,458.24 = 6,181.18/x
  3. Step 3: Cross multiply
    20,971.98x = 31,458.24 × 6,181.18
  4. Step 4: Simplify right side
    20,971.98x = 194,448,965.28
  5. Step 5: Solve for x
    x = 194,448,965.28/20,971.98
  6. Step 6: Final answer
    x = 9,271.85

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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.