Home / 21,322.10-31,982.85-9,635.30

Finding the Fourth Proportional to 21,322.10, 31,982.85 and 9,635.30

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Solution

The fourth proportional to 21,322.10, 31,982.85 and 9,635.30 is: 14,452.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.10 : 31,982.85 = 9,635.30 : x
  2. Step 2: Convert to fraction form
    21,322.10/31,982.85 = 9,635.30/x
  3. Step 3: Cross multiply
    21,322.10x = 31,982.85 × 9,635.30
  4. Step 4: Simplify right side
    21,322.10x = 308,164,354.61
  5. Step 5: Solve for x
    x = 308,164,354.61/21,322.10
  6. Step 6: Final answer
    x = 14,452.81

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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.