Home / 20,452.72-28,242.48-12,912.52

Finding the Fourth Proportional to 20,452.72, 28,242.48 and 12,912.52

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Solution

The fourth proportional to 20,452.72, 28,242.48 and 12,912.52 is: 17,830.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.72 : 28,242.48 = 12,912.52 : x
  2. Step 2: Convert to fraction form
    20,452.72/28,242.48 = 12,912.52/x
  3. Step 3: Cross multiply
    20,452.72x = 28,242.48 × 12,912.52
  4. Step 4: Simplify right side
    20,452.72x = 364,681,587.85
  5. Step 5: Solve for x
    x = 364,681,587.85/20,452.72
  6. Step 6: Final answer
    x = 17,830.47

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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.