Home / 20,108.45-30,161.19-8,259.01

Finding the Fourth Proportional to 20,108.45, 30,161.19 and 8,259.01

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Solution

The fourth proportional to 20,108.45, 30,161.19 and 8,259.01 is: 12,387.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.45 : 30,161.19 = 8,259.01 : x
  2. Step 2: Convert to fraction form
    20,108.45/30,161.19 = 8,259.01/x
  3. Step 3: Cross multiply
    20,108.45x = 30,161.19 × 8,259.01
  4. Step 4: Simplify right side
    20,108.45x = 249,101,494.42
  5. Step 5: Solve for x
    x = 249,101,494.42/20,108.45
  6. Step 6: Final answer
    x = 12,387.90

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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.