Home / 20,887.34-31,329.52-9,796.55

Finding the Fourth Proportional to 20,887.34, 31,329.52 and 9,796.55

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Solution

The fourth proportional to 20,887.34, 31,329.52 and 9,796.55 is: 14,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.34 : 31,329.52 = 9,796.55 : x
  2. Step 2: Convert to fraction form
    20,887.34/31,329.52 = 9,796.55/x
  3. Step 3: Cross multiply
    20,887.34x = 31,329.52 × 9,796.55
  4. Step 4: Simplify right side
    20,887.34x = 306,921,028.02
  5. Step 5: Solve for x
    x = 306,921,028.02/20,887.34
  6. Step 6: Final answer
    x = 14,694.12

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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.