Home / 21,609.44-29,820.88-12,181.04

Finding the Fourth Proportional to 21,609.44, 29,820.88 and 12,181.04

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Solution

The fourth proportional to 21,609.44, 29,820.88 and 12,181.04 is: 16,809.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609.44 : 29,820.88 = 12,181.04 : x
  2. Step 2: Convert to fraction form
    21,609.44/29,820.88 = 12,181.04/x
  3. Step 3: Cross multiply
    21,609.44x = 29,820.88 × 12,181.04
  4. Step 4: Simplify right side
    21,609.44x = 363,249,332.12
  5. Step 5: Solve for x
    x = 363,249,332.12/21,609.44
  6. Step 6: Final answer
    x = 16,809.75

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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.