Home / 20,684,986.80-31,027,480.20-18,452,934.60

Finding the Fourth Proportional to 20,684,986.80, 31,027,480.20 and 18,452,934.60

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Solution

The fourth proportional to 20,684,986.80, 31,027,480.20 and 18,452,934.60 is: 27,679,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684,986.80 : 31,027,480.20 = 18,452,934.60 : x
  2. Step 2: Convert to fraction form
    20,684,986.80/31,027,480.20 = 18,452,934.60/x
  3. Step 3: Cross multiply
    20,684,986.80x = 31,027,480.20 × 18,452,934.60
  4. Step 4: Simplify right side
    20,684,986.80x = 572,548,062,933,395
  5. Step 5: Solve for x
    x = 572,548,062,933,395/20,684,986.80
  6. Step 6: Final answer
    x = 27,679,401.90

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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.