Home / 20,159.92-30,239.93-6,120.05

Finding the Fourth Proportional to 20,159.92, 30,239.93 and 6,120.05

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Solution

The fourth proportional to 20,159.92, 30,239.93 and 6,120.05 is: 9,180.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.92 : 30,239.93 = 6,120.05 : x
  2. Step 2: Convert to fraction form
    20,159.92/30,239.93 = 6,120.05/x
  3. Step 3: Cross multiply
    20,159.92x = 30,239.93 × 6,120.05
  4. Step 4: Simplify right side
    20,159.92x = 185,069,883.60
  5. Step 5: Solve for x
    x = 185,069,883.60/20,159.92
  6. Step 6: Final answer
    x = 9,180.09

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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.