Home / 39,026.80-53,856.66-21,121.62

Finding the Fourth Proportional to 39,026.80, 53,856.66 and 21,121.62

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Solution

The fourth proportional to 39,026.80, 53,856.66 and 21,121.62 is: 29,147.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,026.80 : 53,856.66 = 21,121.62 : x
  2. Step 2: Convert to fraction form
    39,026.80/53,856.66 = 21,121.62/x
  3. Step 3: Cross multiply
    39,026.80x = 53,856.66 × 21,121.62
  4. Step 4: Simplify right side
    39,026.80x = 1,137,539,906.99
  5. Step 5: Solve for x
    x = 1,137,539,906.99/39,026.80
  6. Step 6: Final answer
    x = 29,147.66

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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.