Home / 39,795.59-54,919.28-21,891.35

Finding the Fourth Proportional to 39,795.59, 54,919.28 and 21,891.35

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Solution

The fourth proportional to 39,795.59, 54,919.28 and 21,891.35 is: 30,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,795.59 : 54,919.28 = 21,891.35 : x
  2. Step 2: Convert to fraction form
    39,795.59/54,919.28 = 21,891.35/x
  3. Step 3: Cross multiply
    39,795.59x = 54,919.28 × 21,891.35
  4. Step 4: Simplify right side
    39,795.59x = 1,202,257,180.23
  5. Step 5: Solve for x
    x = 1,202,257,180.23/39,795.59
  6. Step 6: Final answer
    x = 30,210.81

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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.