Home / 20,671.92-28,526.64-11,720.24

Finding the Fourth Proportional to 20,671.92, 28,526.64 and 11,720.24

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Solution

The fourth proportional to 20,671.92, 28,526.64 and 11,720.24 is: 16,173.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.92 : 28,526.64 = 11,720.24 : x
  2. Step 2: Convert to fraction form
    20,671.92/28,526.64 = 11,720.24/x
  3. Step 3: Cross multiply
    20,671.92x = 28,526.64 × 11,720.24
  4. Step 4: Simplify right side
    20,671.92x = 334,339,067.19
  5. Step 5: Solve for x
    x = 334,339,067.19/20,671.92
  6. Step 6: Final answer
    x = 16,173.59

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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.