Home / 20,898.55-31,358.58-13,883.41

Finding the Fourth Proportional to 20,898.55, 31,358.58 and 13,883.41

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Solution

The fourth proportional to 20,898.55, 31,358.58 and 13,883.41 is: 20,832.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.55 : 31,358.58 = 13,883.41 : x
  2. Step 2: Convert to fraction form
    20,898.55/31,358.58 = 13,883.41/x
  3. Step 3: Cross multiply
    20,898.55x = 31,358.58 × 13,883.41
  4. Step 4: Simplify right side
    20,898.55x = 435,364,010.29
  5. Step 5: Solve for x
    x = 435,364,010.29/20,898.55
  6. Step 6: Final answer
    x = 20,832.26

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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.