Home / 20,983.68-31,445.84-11,627.98

Finding the Fourth Proportional to 20,983.68, 31,445.84 and 11,627.98

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Solution

The fourth proportional to 20,983.68, 31,445.84 and 11,627.98 is: 17,425.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.68 : 31,445.84 = 11,627.98 : x
  2. Step 2: Convert to fraction form
    20,983.68/31,445.84 = 11,627.98/x
  3. Step 3: Cross multiply
    20,983.68x = 31,445.84 × 11,627.98
  4. Step 4: Simplify right side
    20,983.68x = 365,651,549.06
  5. Step 5: Solve for x
    x = 365,651,549.06/20,983.68
  6. Step 6: Final answer
    x = 17,425.52

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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.