Home / 12,790,840.32-17,651,590.60-6,989,866.56

Finding the Fourth Proportional to 12,790,840.32, 17,651,590.60 and 6,989,866.56

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Solution

The fourth proportional to 12,790,840.32, 17,651,590.60 and 6,989,866.56 is: 9,646,142.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790,840.32 : 17,651,590.60 = 6,989,866.56 : x
  2. Step 2: Convert to fraction form
    12,790,840.32/17,651,590.60 = 6,989,866.56/x
  3. Step 3: Cross multiply
    12,790,840.32x = 17,651,590.60 × 6,989,866.56
  4. Step 4: Simplify right side
    12,790,840.32x = 123,382,262,865,750.34
  5. Step 5: Solve for x
    x = 123,382,262,865,750.34/12,790,840.32
  6. Step 6: Final answer
    x = 9,646,142.07

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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.