Home / 13,172,342.30-18,178,047.61-7,211,649.66

Finding the Fourth Proportional to 13,172,342.30, 18,178,047.61 and 7,211,649.66

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Solution

The fourth proportional to 13,172,342.30, 18,178,047.61 and 7,211,649.66 is: 9,952,194.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172,342.30 : 18,178,047.61 = 7,211,649.66 : x
  2. Step 2: Convert to fraction form
    13,172,342.30/18,178,047.61 = 7,211,649.66/x
  3. Step 3: Cross multiply
    13,172,342.30x = 18,178,047.61 × 7,211,649.66
  4. Step 4: Simplify right side
    13,172,342.30x = 131,093,710,866,120.31
  5. Step 5: Solve for x
    x = 131,093,710,866,120.31/13,172,342.30
  6. Step 6: Final answer
    x = 9,952,194.37

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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.