Home / 20,210.28-30,282.66-13,181.88

Finding the Fourth Proportional to 20,210.28, 30,282.66 and 13,181.88

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Solution

The fourth proportional to 20,210.28, 30,282.66 and 13,181.88 is: 19,751.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.28 : 30,282.66 = 13,181.88 : x
  2. Step 2: Convert to fraction form
    20,210.28/30,282.66 = 13,181.88/x
  3. Step 3: Cross multiply
    20,210.28x = 30,282.66 × 13,181.88
  4. Step 4: Simplify right side
    20,210.28x = 399,182,390.20
  5. Step 5: Solve for x
    x = 399,182,390.20/20,210.28
  6. Step 6: Final answer
    x = 19,751.45

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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.