Home / 20,718,748.38-31,080,958.79-7,068,229.72

Finding the Fourth Proportional to 20,718,748.38, 31,080,958.79 and 7,068,229.72

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Solution

The fourth proportional to 20,718,748.38, 31,080,958.79 and 7,068,229.72 is: 10,603,312.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,748.38 : 31,080,958.79 = 7,068,229.72 : x
  2. Step 2: Convert to fraction form
    20,718,748.38/31,080,958.79 = 7,068,229.72/x
  3. Step 3: Cross multiply
    20,718,748.38x = 31,080,958.79 × 7,068,229.72
  4. Step 4: Simplify right side
    20,718,748.38x = 219,687,356,645,573.22
  5. Step 5: Solve for x
    x = 219,687,356,645,573.22/20,718,748.38
  6. Step 6: Final answer
    x = 10,603,312.16

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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.