Home / 20,408.02-30,608.16-5,613.28

Finding the Fourth Proportional to 20,408.02, 30,608.16 and 5,613.28

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Solution

The fourth proportional to 20,408.02, 30,608.16 and 5,613.28 is: 8,418.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.02 : 30,608.16 = 5,613.28 : x
  2. Step 2: Convert to fraction form
    20,408.02/30,608.16 = 5,613.28/x
  3. Step 3: Cross multiply
    20,408.02x = 30,608.16 × 5,613.28
  4. Step 4: Simplify right side
    20,408.02x = 171,812,172.36
  5. Step 5: Solve for x
    x = 171,812,172.36/20,408.02
  6. Step 6: Final answer
    x = 8,418.86

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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.