Home / 39,180.84-54,069.66-21,275.94

Finding the Fourth Proportional to 39,180.84, 54,069.66 and 21,275.94

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Solution

The fourth proportional to 39,180.84, 54,069.66 and 21,275.94 is: 29,360.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,180.84 : 54,069.66 = 21,275.94 : x
  2. Step 2: Convert to fraction form
    39,180.84/54,069.66 = 21,275.94/x
  3. Step 3: Cross multiply
    39,180.84x = 54,069.66 × 21,275.94
  4. Step 4: Simplify right side
    39,180.84x = 1,150,382,841.98
  5. Step 5: Solve for x
    x = 1,150,382,841.98/39,180.84
  6. Step 6: Final answer
    x = 29,360.85

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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.