Home / 20,704,486.47-28,572,304.68-12,007,815.36

Finding the Fourth Proportional to 20,704,486.47, 28,572,304.68 and 12,007,815.36

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Solution

The fourth proportional to 20,704,486.47, 28,572,304.68 and 12,007,815.36 is: 16,570,850.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704,486.47 : 28,572,304.68 = 12,007,815.36 : x
  2. Step 2: Convert to fraction form
    20,704,486.47/28,572,304.68 = 12,007,815.36/x
  3. Step 3: Cross multiply
    20,704,486.47x = 28,572,304.68 × 12,007,815.36
  4. Step 4: Simplify right side
    20,704,486.47x = 343,090,959,007,103.88
  5. Step 5: Solve for x
    x = 343,090,959,007,103.88/20,704,486.47
  6. Step 6: Final answer
    x = 16,570,850.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.