Home / 20,678,956.05-31,004,069.94-9,158,145.33

Finding the Fourth Proportional to 20,678,956.05, 31,004,069.94 and 9,158,145.33

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Solution

The fourth proportional to 20,678,956.05, 31,004,069.94 and 9,158,145.33 is: 13,730,856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,956.05 : 31,004,069.94 = 9,158,145.33 : x
  2. Step 2: Convert to fraction form
    20,678,956.05/31,004,069.94 = 9,158,145.33/x
  3. Step 3: Cross multiply
    20,678,956.05x = 31,004,069.94 × 9,158,145.33
  4. Step 4: Simplify right side
    20,678,956.05x = 283,939,778,332,004.38
  5. Step 5: Solve for x
    x = 283,939,778,332,004.38/20,678,956.05
  6. Step 6: Final answer
    x = 13,730,856.51

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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.