Home / 20,972.54-31,459.07-6,181.74

Finding the Fourth Proportional to 20,972.54, 31,459.07 and 6,181.74

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Solution

The fourth proportional to 20,972.54, 31,459.07 and 6,181.74 is: 9,272.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.54 : 31,459.07 = 6,181.74 : x
  2. Step 2: Convert to fraction form
    20,972.54/31,459.07 = 6,181.74/x
  3. Step 3: Cross multiply
    20,972.54x = 31,459.07 × 6,181.74
  4. Step 4: Simplify right side
    20,972.54x = 194,471,760.47
  5. Step 5: Solve for x
    x = 194,471,760.47/20,972.54
  6. Step 6: Final answer
    x = 9,272.69

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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.