Home / 20,850.52-31,267.88-6,807.20

Finding the Fourth Proportional to 20,850.52, 31,267.88 and 6,807.20

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Solution

The fourth proportional to 20,850.52, 31,267.88 and 6,807.20 is: 10,208.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.52 : 31,267.88 = 6,807.20 : x
  2. Step 2: Convert to fraction form
    20,850.52/31,267.88 = 6,807.20/x
  3. Step 3: Cross multiply
    20,850.52x = 31,267.88 × 6,807.20
  4. Step 4: Simplify right side
    20,850.52x = 212,846,712.74
  5. Step 5: Solve for x
    x = 212,846,712.74/20,850.52
  6. Step 6: Final answer
    x = 10,208.22

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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.