Home / 21,245.27-31,867.88-10,118.21

Finding the Fourth Proportional to 21,245.27, 31,867.88 and 10,118.21

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Solution

The fourth proportional to 21,245.27, 31,867.88 and 10,118.21 is: 15,177.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.27 : 31,867.88 = 10,118.21 : x
  2. Step 2: Convert to fraction form
    21,245.27/31,867.88 = 10,118.21/x
  3. Step 3: Cross multiply
    21,245.27x = 31,867.88 × 10,118.21
  4. Step 4: Simplify right side
    21,245.27x = 322,445,692.16
  5. Step 5: Solve for x
    x = 322,445,692.16/21,245.27
  6. Step 6: Final answer
    x = 15,177.30

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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.