Home / 20,512.52-30,771.10-6,468.40

Finding the Fourth Proportional to 20,512.52, 30,771.10 and 6,468.40

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Solution

The fourth proportional to 20,512.52, 30,771.10 and 6,468.40 is: 9,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.52 : 30,771.10 = 6,468.40 : x
  2. Step 2: Convert to fraction form
    20,512.52/30,771.10 = 6,468.40/x
  3. Step 3: Cross multiply
    20,512.52x = 30,771.10 × 6,468.40
  4. Step 4: Simplify right side
    20,512.52x = 199,039,678.01
  5. Step 5: Solve for x
    x = 199,039,678.01/20,512.52
  6. Step 6: Final answer
    x = 9,703.32

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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.