Home / 20,820.24-31,232.03-6,780.00

Finding the Fourth Proportional to 20,820.24, 31,232.03 and 6,780.00

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Solution

The fourth proportional to 20,820.24, 31,232.03 and 6,780.00 is: 10,170.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,820.24 : 31,232.03 = 6,780.00 : x
  2. Step 2: Convert to fraction form
    20,820.24/31,232.03 = 6,780.00/x
  3. Step 3: Cross multiply
    20,820.24x = 31,232.03 × 6,780.00
  4. Step 4: Simplify right side
    20,820.24x = 211,753,284.76
  5. Step 5: Solve for x
    x = 211,753,284.76/20,820.24
  6. Step 6: Final answer
    x = 10,170.55

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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.