Home / 20,898.15-31,310.78-17,410.56

Finding the Fourth Proportional to 20,898.15, 31,310.78 and 17,410.56

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Solution

The fourth proportional to 20,898.15, 31,310.78 and 17,410.56 is: 26,085.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.15 : 31,310.78 = 17,410.56 : x
  2. Step 2: Convert to fraction form
    20,898.15/31,310.78 = 17,410.56/x
  3. Step 3: Cross multiply
    20,898.15x = 31,310.78 × 17,410.56
  4. Step 4: Simplify right side
    20,898.15x = 545,138,126.78
  5. Step 5: Solve for x
    x = 545,138,126.78/20,898.15
  6. Step 6: Final answer
    x = 26,085.47

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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.