Home / 20,466.62-28,247.85-12,813.47

Finding the Fourth Proportional to 20,466.62, 28,247.85 and 12,813.47

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Solution

The fourth proportional to 20,466.62, 28,247.85 and 12,813.47 is: 17,685.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.62 : 28,247.85 = 12,813.47 : x
  2. Step 2: Convert to fraction form
    20,466.62/28,247.85 = 12,813.47/x
  3. Step 3: Cross multiply
    20,466.62x = 28,247.85 × 12,813.47
  4. Step 4: Simplify right side
    20,466.62x = 361,952,837.30
  5. Step 5: Solve for x
    x = 361,952,837.30/20,466.62
  6. Step 6: Final answer
    x = 17,685.04

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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.