Home / 28,738.94-39,677.96-19,679.46

Finding the Fourth Proportional to 28,738.94, 39,677.96 and 19,679.46

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Solution

The fourth proportional to 28,738.94, 39,677.96 and 19,679.46 is: 27,170.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.94 : 39,677.96 = 19,679.46 : x
  2. Step 2: Convert to fraction form
    28,738.94/39,677.96 = 19,679.46/x
  3. Step 3: Cross multiply
    28,738.94x = 39,677.96 × 19,679.46
  4. Step 4: Simplify right side
    28,738.94x = 780,840,826.70
  5. Step 5: Solve for x
    x = 780,840,826.70/28,738.94
  6. Step 6: Final answer
    x = 27,170.13

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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.