Home / 20,738,019.60-31,107,029.40-18,722,480.40

Finding the Fourth Proportional to 20,738,019.60, 31,107,029.40 and 18,722,480.40

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Solution

The fourth proportional to 20,738,019.60, 31,107,029.40 and 18,722,480.40 is: 28,083,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738,019.60 : 31,107,029.40 = 18,722,480.40 : x
  2. Step 2: Convert to fraction form
    20,738,019.60/31,107,029.40 = 18,722,480.40/x
  3. Step 3: Cross multiply
    20,738,019.60x = 31,107,029.40 × 18,722,480.40
  4. Step 4: Simplify right side
    20,738,019.60x = 582,400,748,243,723.62
  5. Step 5: Solve for x
    x = 582,400,748,243,723.62/20,738,019.60
  6. Step 6: Final answer
    x = 28,083,720.60

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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.