Home / 38,969.88-53,778.68-21,064.84

Finding the Fourth Proportional to 38,969.88, 53,778.68 and 21,064.84

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Solution

The fourth proportional to 38,969.88, 53,778.68 and 21,064.84 is: 29,069.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,969.88 : 53,778.68 = 21,064.84 : x
  2. Step 2: Convert to fraction form
    38,969.88/53,778.68 = 21,064.84/x
  3. Step 3: Cross multiply
    38,969.88x = 53,778.68 × 21,064.84
  4. Step 4: Simplify right side
    38,969.88x = 1,132,839,236.95
  5. Step 5: Solve for x
    x = 1,132,839,236.95/38,969.88
  6. Step 6: Final answer
    x = 29,069.61

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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.