Home / 19,820.32-29,704.56-8,119.84

Finding the Fourth Proportional to 19,820.32, 29,704.56 and 8,119.84

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Solution

The fourth proportional to 19,820.32, 29,704.56 and 8,119.84 is: 12,169.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.32 : 29,704.56 = 8,119.84 : x
  2. Step 2: Convert to fraction form
    19,820.32/29,704.56 = 8,119.84/x
  3. Step 3: Cross multiply
    19,820.32x = 29,704.56 × 8,119.84
  4. Step 4: Simplify right side
    19,820.32x = 241,196,274.47
  5. Step 5: Solve for x
    x = 241,196,274.47/19,820.32
  6. Step 6: Final answer
    x = 12,169.14

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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.