Home / 20,882.81-31,267.71-15,293.81

Finding the Fourth Proportional to 20,882.81, 31,267.71 and 15,293.81

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Solution

The fourth proportional to 20,882.81, 31,267.71 and 15,293.81 is: 22,899.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.81 : 31,267.71 = 15,293.81 : x
  2. Step 2: Convert to fraction form
    20,882.81/31,267.71 = 15,293.81/x
  3. Step 3: Cross multiply
    20,882.81x = 31,267.71 × 15,293.81
  4. Step 4: Simplify right side
    20,882.81x = 478,202,259.54
  5. Step 5: Solve for x
    x = 478,202,259.54/20,882.81
  6. Step 6: Final answer
    x = 22,899.33

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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.