Home / 33,387.40-46,078.27-21,288.31

Finding the Fourth Proportional to 33,387.40, 46,078.27 and 21,288.31

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Solution

The fourth proportional to 33,387.40, 46,078.27 and 21,288.31 is: 29,380.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,387.40 : 46,078.27 = 21,288.31 : x
  2. Step 2: Convert to fraction form
    33,387.40/46,078.27 = 21,288.31/x
  3. Step 3: Cross multiply
    33,387.40x = 46,078.27 × 21,288.31
  4. Step 4: Simplify right side
    33,387.40x = 980,928,465.04
  5. Step 5: Solve for x
    x = 980,928,465.04/33,387.40
  6. Step 6: Final answer
    x = 29,380.20

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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.