Home / 19,997.90-30,007.20-8,160.35

Finding the Fourth Proportional to 19,997.90, 30,007.20 and 8,160.35

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Solution

The fourth proportional to 19,997.90, 30,007.20 and 8,160.35 is: 12,244.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,997.90 : 30,007.20 = 8,160.35 : x
  2. Step 2: Convert to fraction form
    19,997.90/30,007.20 = 8,160.35/x
  3. Step 3: Cross multiply
    19,997.90x = 30,007.20 × 8,160.35
  4. Step 4: Simplify right side
    19,997.90x = 244,869,254.52
  5. Step 5: Solve for x
    x = 244,869,254.52/19,997.90
  6. Step 6: Final answer
    x = 12,244.75

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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.