Home / 19,820.38-29,711.97-6,663.55

Finding the Fourth Proportional to 19,820.38, 29,711.97 and 6,663.55

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Solution

The fourth proportional to 19,820.38, 29,711.97 and 6,663.55 is: 9,989.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.38 : 29,711.97 = 6,663.55 : x
  2. Step 2: Convert to fraction form
    19,820.38/29,711.97 = 6,663.55/x
  3. Step 3: Cross multiply
    19,820.38x = 29,711.97 × 6,663.55
  4. Step 4: Simplify right side
    19,820.38x = 197,987,197.69
  5. Step 5: Solve for x
    x = 197,987,197.69/19,820.38
  6. Step 6: Final answer
    x = 9,989.07

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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.