Home / 12,788,643.80-17,656,149.30-8,322,454.64

Finding the Fourth Proportional to 12,788,643.80, 17,656,149.30 and 8,322,454.64

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Solution

The fourth proportional to 12,788,643.80, 17,656,149.30 and 8,322,454.64 is: 11,490,076.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788,643.80 : 17,656,149.30 = 8,322,454.64 : x
  2. Step 2: Convert to fraction form
    12,788,643.80/17,656,149.30 = 8,322,454.64/x
  3. Step 3: Cross multiply
    12,788,643.80x = 17,656,149.30 × 8,322,454.64
  4. Step 4: Simplify right side
    12,788,643.80x = 146,942,501,666,317.75
  5. Step 5: Solve for x
    x = 146,942,501,666,317.75/12,788,643.80
  6. Step 6: Final answer
    x = 11,490,076.97

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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.