Home / 20,160.90-30,241.35-18,046.80

Finding the Fourth Proportional to 20,160.90, 30,241.35 and 18,046.80

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Solution

The fourth proportional to 20,160.90, 30,241.35 and 18,046.80 is: 27,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.90 : 30,241.35 = 18,046.80 : x
  2. Step 2: Convert to fraction form
    20,160.90/30,241.35 = 18,046.80/x
  3. Step 3: Cross multiply
    20,160.90x = 30,241.35 × 18,046.80
  4. Step 4: Simplify right side
    20,160.90x = 545,759,595.18
  5. Step 5: Solve for x
    x = 545,759,595.18/20,160.90
  6. Step 6: Final answer
    x = 27,070.20

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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.