Home / 20,144.16-30,216.24-6,989.40

Finding the Fourth Proportional to 20,144.16, 30,216.24 and 6,989.40

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Solution

The fourth proportional to 20,144.16, 30,216.24 and 6,989.40 is: 10,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.16 : 30,216.24 = 6,989.40 : x
  2. Step 2: Convert to fraction form
    20,144.16/30,216.24 = 6,989.40/x
  3. Step 3: Cross multiply
    20,144.16x = 30,216.24 × 6,989.40
  4. Step 4: Simplify right side
    20,144.16x = 211,193,387.86
  5. Step 5: Solve for x
    x = 211,193,387.86/20,144.16
  6. Step 6: Final answer
    x = 10,484.10

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Similar ratio
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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.