Home / 39,578.92-54,618.99-21,429.83

Finding the Fourth Proportional to 39,578.92, 54,618.99 and 21,429.83

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Solution

The fourth proportional to 39,578.92, 54,618.99 and 21,429.83 is: 29,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,578.92 : 54,618.99 = 21,429.83 : x
  2. Step 2: Convert to fraction form
    39,578.92/54,618.99 = 21,429.83/x
  3. Step 3: Cross multiply
    39,578.92x = 54,618.99 × 21,429.83
  4. Step 4: Simplify right side
    39,578.92x = 1,170,475,670.47
  5. Step 5: Solve for x
    x = 1,170,475,670.47/39,578.92
  6. Step 6: Final answer
    x = 29,573.21

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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.