Home / 12,790,521.37-17,650,966.49-6,989,303.98

Finding the Fourth Proportional to 12,790,521.37, 17,650,966.49 and 6,989,303.98

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Solution

The fourth proportional to 12,790,521.37, 17,650,966.49 and 6,989,303.98 is: 9,645,265.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790,521.37 : 17,650,966.49 = 6,989,303.98 : x
  2. Step 2: Convert to fraction form
    12,790,521.37/17,650,966.49 = 6,989,303.98/x
  3. Step 3: Cross multiply
    12,790,521.37x = 17,650,966.49 × 6,989,303.98
  4. Step 4: Simplify right side
    12,790,521.37x = 123,367,970,339,403.62
  5. Step 5: Solve for x
    x = 123,367,970,339,403.62/12,790,521.37
  6. Step 6: Final answer
    x = 9,645,265.17

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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.