Home / 20,977.22-28,948.65-11,546.12

Finding the Fourth Proportional to 20,977.22, 28,948.65 and 11,546.12

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Solution

The fourth proportional to 20,977.22, 28,948.65 and 11,546.12 is: 15,933.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.22 : 28,948.65 = 11,546.12 : x
  2. Step 2: Convert to fraction form
    20,977.22/28,948.65 = 11,546.12/x
  3. Step 3: Cross multiply
    20,977.22x = 28,948.65 × 11,546.12
  4. Step 4: Simplify right side
    20,977.22x = 334,244,586.74
  5. Step 5: Solve for x
    x = 334,244,586.74/20,977.22
  6. Step 6: Final answer
    x = 15,933.69

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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.