Home / 33,430.94-46,139.78-21,336.65

Finding the Fourth Proportional to 33,430.94, 46,139.78 and 21,336.65

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Solution

The fourth proportional to 33,430.94, 46,139.78 and 21,336.65 is: 29,447.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,430.94 : 46,139.78 = 21,336.65 : x
  2. Step 2: Convert to fraction form
    33,430.94/46,139.78 = 21,336.65/x
  3. Step 3: Cross multiply
    33,430.94x = 46,139.78 × 21,336.65
  4. Step 4: Simplify right side
    33,430.94x = 984,468,159.58
  5. Step 5: Solve for x
    x = 984,468,159.58/33,430.94
  6. Step 6: Final answer
    x = 29,447.81

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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.