Home / 20,325.10-28,051.20-12,366.84

Finding the Fourth Proportional to 20,325.10, 28,051.20 and 12,366.84

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Solution

The fourth proportional to 20,325.10, 28,051.20 and 12,366.84 is: 17,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.10 : 28,051.20 = 12,366.84 : x
  2. Step 2: Convert to fraction form
    20,325.10/28,051.20 = 12,366.84/x
  3. Step 3: Cross multiply
    20,325.10x = 28,051.20 × 12,366.84
  4. Step 4: Simplify right side
    20,325.10x = 346,904,702.21
  5. Step 5: Solve for x
    x = 346,904,702.21/20,325.10
  6. Step 6: Final answer
    x = 17,067.80

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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.