Home / 21,026.25-31,539.38-8,553.06

Finding the Fourth Proportional to 21,026.25, 31,539.38 and 8,553.06

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Solution

The fourth proportional to 21,026.25, 31,539.38 and 8,553.06 is: 12,829.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.25 : 31,539.38 = 8,553.06 : x
  2. Step 2: Convert to fraction form
    21,026.25/31,539.38 = 8,553.06/x
  3. Step 3: Cross multiply
    21,026.25x = 31,539.38 × 8,553.06
  4. Step 4: Simplify right side
    21,026.25x = 269,758,209.50
  5. Step 5: Solve for x
    x = 269,758,209.50/21,026.25
  6. Step 6: Final answer
    x = 12,829.59

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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.