Home / 20,406.10-30,607.35-5,613.70

Finding the Fourth Proportional to 20,406.10, 30,607.35 and 5,613.70

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Solution

The fourth proportional to 20,406.10, 30,607.35 and 5,613.70 is: 8,420.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.10 : 30,607.35 = 5,613.70 : x
  2. Step 2: Convert to fraction form
    20,406.10/30,607.35 = 5,613.70/x
  3. Step 3: Cross multiply
    20,406.10x = 30,607.35 × 5,613.70
  4. Step 4: Simplify right side
    20,406.10x = 171,820,480.70
  5. Step 5: Solve for x
    x = 171,820,480.70/20,406.10
  6. Step 6: Final answer
    x = 8,420.05

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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.