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Finding the Fourth Proportional to 19,879,403.20, 29,819,104.80 and 10,297,718.80

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Solution

The fourth proportional to 19,879,403.20, 29,819,104.80 and 10,297,718.80 is: 15,446,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879,403.20 : 29,819,104.80 = 10,297,718.80 : x
  2. Step 2: Convert to fraction form
    19,879,403.20/29,819,104.80 = 10,297,718.80/x
  3. Step 3: Cross multiply
    19,879,403.20x = 29,819,104.80 × 10,297,718.80
  4. Step 4: Simplify right side
    19,879,403.20x = 307,068,756,098,130.25
  5. Step 5: Solve for x
    x = 307,068,756,098,130.25/19,879,403.20
  6. Step 6: Final answer
    x = 15,446,578.20

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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.