Home / 39,290.44-54,220.05-21,385.84

Finding the Fourth Proportional to 39,290.44, 54,220.05 and 21,385.84

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Solution

The fourth proportional to 39,290.44, 54,220.05 and 21,385.84 is: 29,512.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,290.44 : 54,220.05 = 21,385.84 : x
  2. Step 2: Convert to fraction form
    39,290.44/54,220.05 = 21,385.84/x
  3. Step 3: Cross multiply
    39,290.44x = 54,220.05 × 21,385.84
  4. Step 4: Simplify right side
    39,290.44x = 1,159,541,314.09
  5. Step 5: Solve for x
    x = 1,159,541,314.09/39,290.44
  6. Step 6: Final answer
    x = 29,512.05

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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.