Home / 20,718,039.77-31,068,508.65-7,072,286.41

Finding the Fourth Proportional to 20,718,039.77, 31,068,508.65 and 7,072,286.41

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Solution

The fourth proportional to 20,718,039.77, 31,068,508.65 and 7,072,286.41 is: 10,605,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,039.77 : 31,068,508.65 = 7,072,286.41 : x
  2. Step 2: Convert to fraction form
    20,718,039.77/31,068,508.65 = 7,072,286.41/x
  3. Step 3: Cross multiply
    20,718,039.77x = 31,068,508.65 × 7,072,286.41
  4. Step 4: Simplify right side
    20,718,039.77x = 219,725,391,516,677
  5. Step 5: Solve for x
    x = 219,725,391,516,677/20,718,039.77
  6. Step 6: Final answer
    x = 10,605,510.65

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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.