Home / 20,422,138.40-30,633,207.60-18,863,244.80

Finding the Fourth Proportional to 20,422,138.40, 30,633,207.60 and 18,863,244.80

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Solution

The fourth proportional to 20,422,138.40, 30,633,207.60 and 18,863,244.80 is: 28,294,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422,138.40 : 30,633,207.60 = 18,863,244.80 : x
  2. Step 2: Convert to fraction form
    20,422,138.40/30,633,207.60 = 18,863,244.80/x
  3. Step 3: Cross multiply
    20,422,138.40x = 30,633,207.60 × 18,863,244.80
  4. Step 4: Simplify right side
    20,422,138.40x = 577,841,693,968,020.50
  5. Step 5: Solve for x
    x = 577,841,693,968,020.50/20,422,138.40
  6. Step 6: Final answer
    x = 28,294,867.20

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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.