Home / 20,718,040.14-31,068,509.22-7,072,286.79

Finding the Fourth Proportional to 20,718,040.14, 31,068,509.22 and 7,072,286.79

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Solution

The fourth proportional to 20,718,040.14, 31,068,509.22 and 7,072,286.79 is: 10,605,511.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718,040.14 : 31,068,509.22 = 7,072,286.79 : x
  2. Step 2: Convert to fraction form
    20,718,040.14/31,068,509.22 = 7,072,286.79/x
  3. Step 3: Cross multiply
    20,718,040.14x = 31,068,509.22 × 7,072,286.79
  4. Step 4: Simplify right side
    20,718,040.14x = 219,725,407,341,599.19
  5. Step 5: Solve for x
    x = 219,725,407,341,599.19/20,718,040.14
  6. Step 6: Final answer
    x = 10,605,511.23

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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.