Home / 20,408.52-30,608.88-5,613.72

Finding the Fourth Proportional to 20,408.52, 30,608.88 and 5,613.72

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Solution

The fourth proportional to 20,408.52, 30,608.88 and 5,613.72 is: 8,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.52 : 30,608.88 = 5,613.72 : x
  2. Step 2: Convert to fraction form
    20,408.52/30,608.88 = 5,613.72/x
  3. Step 3: Cross multiply
    20,408.52x = 30,608.88 × 5,613.72
  4. Step 4: Simplify right side
    20,408.52x = 171,829,681.83
  5. Step 5: Solve for x
    x = 171,829,681.83/20,408.52
  6. Step 6: Final answer
    x = 8,419.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.