Home / 20,452.60-28,242.48-12,912.40

Finding the Fourth Proportional to 20,452.60, 28,242.48 and 12,912.40

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Solution

The fourth proportional to 20,452.60, 28,242.48 and 12,912.40 is: 17,830.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.60 : 28,242.48 = 12,912.40 : x
  2. Step 2: Convert to fraction form
    20,452.60/28,242.48 = 12,912.40/x
  3. Step 3: Cross multiply
    20,452.60x = 28,242.48 × 12,912.40
  4. Step 4: Simplify right side
    20,452.60x = 364,678,198.75
  5. Step 5: Solve for x
    x = 364,678,198.75/20,452.60
  6. Step 6: Final answer
    x = 17,830.41

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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.