Home / 20,994.80-31,499.87-9,755.33

Finding the Fourth Proportional to 20,994.80, 31,499.87 and 9,755.33

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Solution

The fourth proportional to 20,994.80, 31,499.87 and 9,755.33 is: 14,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.80 : 31,499.87 = 9,755.33 : x
  2. Step 2: Convert to fraction form
    20,994.80/31,499.87 = 9,755.33/x
  3. Step 3: Cross multiply
    20,994.80x = 31,499.87 × 9,755.33
  4. Step 4: Simplify right side
    20,994.80x = 307,291,420.53
  5. Step 5: Solve for x
    x = 307,291,420.53/20,994.80
  6. Step 6: Final answer
    x = 14,636.55

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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.