Home / 20,977.21-28,948.53-11,546.38

Finding the Fourth Proportional to 20,977.21, 28,948.53 and 11,546.38

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Solution

The fourth proportional to 20,977.21, 28,948.53 and 11,546.38 is: 15,933.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.21 : 28,948.53 = 11,546.38 : x
  2. Step 2: Convert to fraction form
    20,977.21/28,948.53 = 11,546.38/x
  3. Step 3: Cross multiply
    20,977.21x = 28,948.53 × 11,546.38
  4. Step 4: Simplify right side
    20,977.21x = 334,250,727.82
  5. Step 5: Solve for x
    x = 334,250,727.82/20,977.21
  6. Step 6: Final answer
    x = 15,933.99

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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.