Home / 20,848.68-31,199.15-18,388.30

Finding the Fourth Proportional to 20,848.68, 31,199.15 and 18,388.30

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Solution

The fourth proportional to 20,848.68, 31,199.15 and 18,388.30 is: 27,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.68 : 31,199.15 = 18,388.30 : x
  2. Step 2: Convert to fraction form
    20,848.68/31,199.15 = 18,388.30/x
  3. Step 3: Cross multiply
    20,848.68x = 31,199.15 × 18,388.30
  4. Step 4: Simplify right side
    20,848.68x = 573,699,238.00
  5. Step 5: Solve for x
    x = 573,699,238.00/20,848.68
  6. Step 6: Final answer
    x = 27,517.30

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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.