Home / 20,619,678.72-30,930,865.92-5,473,205.76

Finding the Fourth Proportional to 20,619,678.72, 30,930,865.92 and 5,473,205.76

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Solution

The fourth proportional to 20,619,678.72, 30,930,865.92 and 5,473,205.76 is: 8,210,166.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619,678.72 : 30,930,865.92 = 5,473,205.76 : x
  2. Step 2: Convert to fraction form
    20,619,678.72/30,930,865.92 = 5,473,205.76/x
  3. Step 3: Cross multiply
    20,619,678.72x = 30,930,865.92 × 5,473,205.76
  4. Step 4: Simplify right side
    20,619,678.72x = 169,290,993,515,131.69
  5. Step 5: Solve for x
    x = 169,290,993,515,131.69/20,619,678.72
  6. Step 6: Final answer
    x = 8,210,166.41

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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.