Home / 20,997.93-28,977.14-11,566.49

Finding the Fourth Proportional to 20,997.93, 28,977.14 and 11,566.49

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Solution

The fourth proportional to 20,997.93, 28,977.14 and 11,566.49 is: 15,961.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.93 : 28,977.14 = 11,566.49 : x
  2. Step 2: Convert to fraction form
    20,997.93/28,977.14 = 11,566.49/x
  3. Step 3: Cross multiply
    20,997.93x = 28,977.14 × 11,566.49
  4. Step 4: Simplify right side
    20,997.93x = 335,163,597.32
  5. Step 5: Solve for x
    x = 335,163,597.32/20,997.93
  6. Step 6: Final answer
    x = 15,961.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.