Home / 21,971.27-32,961.15-7,176.21

Finding the Fourth Proportional to 21,971.27, 32,961.15 and 7,176.21

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Solution

The fourth proportional to 21,971.27, 32,961.15 and 7,176.21 is: 10,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,971.27 : 32,961.15 = 7,176.21 : x
  2. Step 2: Convert to fraction form
    21,971.27/32,961.15 = 7,176.21/x
  3. Step 3: Cross multiply
    21,971.27x = 32,961.15 × 7,176.21
  4. Step 4: Simplify right side
    21,971.27x = 236,536,134.24
  5. Step 5: Solve for x
    x = 236,536,134.24/21,971.27
  6. Step 6: Final answer
    x = 10,765.70

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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.