Home / 25,359.48-35,021.16-20,898

Finding the Fourth Proportional to 25,359.48, 35,021.16 and 20,898

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Solution

The fourth proportional to 25,359.48, 35,021.16 and 20,898 is: 28,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,359.48 : 35,021.16 = 20,898 : x
  2. Step 2: Convert to fraction form
    25,359.48/35,021.16 = 20,898/x
  3. Step 3: Cross multiply
    25,359.48x = 35,021.16 × 20,898
  4. Step 4: Simplify right side
    25,359.48x = 731,872,201.68
  5. Step 5: Solve for x
    x = 731,872,201.68/25,359.48
  6. Step 6: Final answer
    x = 28,859.91

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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.