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Finding the Fourth Proportional to 20,594,329.80, 30,891,494.70 and 15,811,360.80

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Solution

The fourth proportional to 20,594,329.80, 30,891,494.70 and 15,811,360.80 is: 23,717,041.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,594,329.80 : 30,891,494.70 = 15,811,360.80 : x
  2. Step 2: Convert to fraction form
    20,594,329.80/30,891,494.70 = 15,811,360.80/x
  3. Step 3: Cross multiply
    20,594,329.80x = 30,891,494.70 × 15,811,360.80
  4. Step 4: Simplify right side
    20,594,329.80x = 488,436,568,352,987.75
  5. Step 5: Solve for x
    x = 488,436,568,352,987.75/20,594,329.80
  6. Step 6: Final answer
    x = 23,717,041.20

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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.