Home / 20,667.52-28,520.25-11,714.83

Finding the Fourth Proportional to 20,667.52, 28,520.25 and 11,714.83

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Solution

The fourth proportional to 20,667.52, 28,520.25 and 11,714.83 is: 16,165.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.52 : 28,520.25 = 11,714.83 : x
  2. Step 2: Convert to fraction form
    20,667.52/28,520.25 = 11,714.83/x
  3. Step 3: Cross multiply
    20,667.52x = 28,520.25 × 11,714.83
  4. Step 4: Simplify right side
    20,667.52x = 334,109,880.31
  5. Step 5: Solve for x
    x = 334,109,880.31/20,667.52
  6. Step 6: Final answer
    x = 16,165.94

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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.