Home / 21,026.30-31,540.44-8,539.88

Finding the Fourth Proportional to 21,026.30, 31,540.44 and 8,539.88

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Solution

The fourth proportional to 21,026.30, 31,540.44 and 8,539.88 is: 12,810.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.30 : 31,540.44 = 8,539.88 : x
  2. Step 2: Convert to fraction form
    21,026.30/31,540.44 = 8,539.88/x
  3. Step 3: Cross multiply
    21,026.30x = 31,540.44 × 8,539.88
  4. Step 4: Simplify right side
    21,026.30x = 269,351,572.75
  5. Step 5: Solve for x
    x = 269,351,572.75/21,026.30
  6. Step 6: Final answer
    x = 12,810.22

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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.