Home / 39,026.85-53,857.20-21,121.86

Finding the Fourth Proportional to 39,026.85, 53,857.20 and 21,121.86

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Solution

The fourth proportional to 39,026.85, 53,857.20 and 21,121.86 is: 29,148.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,026.85 : 53,857.20 = 21,121.86 : x
  2. Step 2: Convert to fraction form
    39,026.85/53,857.20 = 21,121.86/x
  3. Step 3: Cross multiply
    39,026.85x = 53,857.20 × 21,121.86
  4. Step 4: Simplify right side
    39,026.85x = 1,137,564,238.39
  5. Step 5: Solve for x
    x = 1,137,564,238.39/39,026.85
  6. Step 6: Final answer
    x = 29,148.25

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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.