Home / 26,030.45-39,004.78-20,121.81

Finding the Fourth Proportional to 26,030.45, 39,004.78 and 20,121.81

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Solution

The fourth proportional to 26,030.45, 39,004.78 and 20,121.81 is: 30,151.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,030.45 : 39,004.78 = 20,121.81 : x
  2. Step 2: Convert to fraction form
    26,030.45/39,004.78 = 20,121.81/x
  3. Step 3: Cross multiply
    26,030.45x = 39,004.78 × 20,121.81
  4. Step 4: Simplify right side
    26,030.45x = 784,846,772.25
  5. Step 5: Solve for x
    x = 784,846,772.25/26,030.45
  6. Step 6: Final answer
    x = 30,151.10

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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.