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Finding the Fourth Proportional to 20,486,798.72, 30,752,075.04 and 8,820,949.12

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Solution

The fourth proportional to 20,486,798.72, 30,752,075.04 and 8,820,949.12 is: 13,240,843.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486,798.72 : 30,752,075.04 = 8,820,949.12 : x
  2. Step 2: Convert to fraction form
    20,486,798.72/30,752,075.04 = 8,820,949.12/x
  3. Step 3: Cross multiply
    20,486,798.72x = 30,752,075.04 × 8,820,949.12
  4. Step 4: Simplify right side
    20,486,798.72x = 271,262,489,262,261.94
  5. Step 5: Solve for x
    x = 271,262,489,262,261.94/20,486,798.72
  6. Step 6: Final answer
    x = 13,240,843.19

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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.