Home / 39,007.82-53,830.74-21,102.77

Finding the Fourth Proportional to 39,007.82, 53,830.74 and 21,102.77

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Solution

The fourth proportional to 39,007.82, 53,830.74 and 21,102.77 is: 29,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,007.82 : 53,830.74 = 21,102.77 : x
  2. Step 2: Convert to fraction form
    39,007.82/53,830.74 = 21,102.77/x
  3. Step 3: Cross multiply
    39,007.82x = 53,830.74 × 21,102.77
  4. Step 4: Simplify right side
    39,007.82x = 1,135,977,376.86
  5. Step 5: Solve for x
    x = 1,135,977,376.86/39,007.82
  6. Step 6: Final answer
    x = 29,121.79

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1.5x scale

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.