Home / 19,995.90-30,004.20-8,158.35

Finding the Fourth Proportional to 19,995.90, 30,004.20 and 8,158.35

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Solution

The fourth proportional to 19,995.90, 30,004.20 and 8,158.35 is: 12,241.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.90 : 30,004.20 = 8,158.35 : x
  2. Step 2: Convert to fraction form
    19,995.90/30,004.20 = 8,158.35/x
  3. Step 3: Cross multiply
    19,995.90x = 30,004.20 × 8,158.35
  4. Step 4: Simplify right side
    19,995.90x = 244,784,765.07
  5. Step 5: Solve for x
    x = 244,784,765.07/19,995.90
  6. Step 6: Final answer
    x = 12,241.75

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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.