Home / 39,065.68-53,906.78-21,834.87

Finding the Fourth Proportional to 39,065.68, 53,906.78 and 21,834.87

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Solution

The fourth proportional to 39,065.68, 53,906.78 and 21,834.87 is: 30,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,065.68 : 53,906.78 = 21,834.87 : x
  2. Step 2: Convert to fraction form
    39,065.68/53,906.78 = 21,834.87/x
  3. Step 3: Cross multiply
    39,065.68x = 53,906.78 × 21,834.87
  4. Step 4: Simplify right side
    39,065.68x = 1,177,047,263.88
  5. Step 5: Solve for x
    x = 1,177,047,263.88/39,065.68
  6. Step 6: Final answer
    x = 30,129.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.