Home / 20,671.58-28,524.40-11,717.30

Finding the Fourth Proportional to 20,671.58, 28,524.40 and 11,717.30

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Solution

The fourth proportional to 20,671.58, 28,524.40 and 11,717.30 is: 16,168.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.58 : 28,524.40 = 11,717.30 : x
  2. Step 2: Convert to fraction form
    20,671.58/28,524.40 = 11,717.30/x
  3. Step 3: Cross multiply
    20,671.58x = 28,524.40 × 11,717.30
  4. Step 4: Simplify right side
    20,671.58x = 334,228,780.20
  5. Step 5: Solve for x
    x = 334,228,780.20/20,671.58
  6. Step 6: Final answer
    x = 16,168.52

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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.