Home / 20,181.65-27,860.76-15,634.21

Finding the Fourth Proportional to 20,181.65, 27,860.76 and 15,634.21

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Solution

The fourth proportional to 20,181.65, 27,860.76 and 15,634.21 is: 21,583.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.65 : 27,860.76 = 15,634.21 : x
  2. Step 2: Convert to fraction form
    20,181.65/27,860.76 = 15,634.21/x
  3. Step 3: Cross multiply
    20,181.65x = 27,860.76 × 15,634.21
  4. Step 4: Simplify right side
    20,181.65x = 435,580,902.95
  5. Step 5: Solve for x
    x = 435,580,902.95/20,181.65
  6. Step 6: Final answer
    x = 21,583.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.