Home / 20,718,677.88-31,072,713.92-6,142,188.80

Finding the Fourth Proportional to 20,718,677.88, 31,072,713.92 and 6,142,188.80

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Solution

The fourth proportional to 20,718,677.88, 31,072,713.92 and 6,142,188.80 is: 9,211,711.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,677.88 : 31,072,713.92 = 6,142,188.80 : x
  2. Step 2: Convert to fraction form
    20,718,677.88/31,072,713.92 = 6,142,188.80/x
  3. Step 3: Cross multiply
    20,718,677.88x = 31,072,713.92 × 6,142,188.80
  4. Step 4: Simplify right side
    20,718,677.88x = 190,854,475,425,028.09
  5. Step 5: Solve for x
    x = 190,854,475,425,028.09/20,718,677.88
  6. Step 6: Final answer
    x = 9,211,711.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.