Home / 20,765.30-31,148.48-6,725.84

Finding the Fourth Proportional to 20,765.30, 31,148.48 and 6,725.84

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Solution

The fourth proportional to 20,765.30, 31,148.48 and 6,725.84 is: 10,088.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.30 : 31,148.48 = 6,725.84 : x
  2. Step 2: Convert to fraction form
    20,765.30/31,148.48 = 6,725.84/x
  3. Step 3: Cross multiply
    20,765.30x = 31,148.48 × 6,725.84
  4. Step 4: Simplify right side
    20,765.30x = 209,499,692.72
  5. Step 5: Solve for x
    x = 209,499,692.72/20,765.30
  6. Step 6: Final answer
    x = 10,088.93

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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.