Home / 12,641,176.10-17,438,396.22-7,678,296.78

Finding the Fourth Proportional to 12,641,176.10, 17,438,396.22 and 7,678,296.78

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Solution

The fourth proportional to 12,641,176.10, 17,438,396.22 and 7,678,296.78 is: 10,592,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641,176.10 : 17,438,396.22 = 7,678,296.78 : x
  2. Step 2: Convert to fraction form
    12,641,176.10/17,438,396.22 = 7,678,296.78/x
  3. Step 3: Cross multiply
    12,641,176.10x = 17,438,396.22 × 7,678,296.78
  4. Step 4: Simplify right side
    12,641,176.10x = 133,897,181,544,390.17
  5. Step 5: Solve for x
    x = 133,897,181,544,390.17/12,641,176.10
  6. Step 6: Final answer
    x = 10,592,145.90

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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.