Home / 28,292.94-39,046.68-15,718.50

Finding the Fourth Proportional to 28,292.94, 39,046.68 and 15,718.50

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Solution

The fourth proportional to 28,292.94, 39,046.68 and 15,718.50 is: 21,692.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.94 : 39,046.68 = 15,718.50 : x
  2. Step 2: Convert to fraction form
    28,292.94/39,046.68 = 15,718.50/x
  3. Step 3: Cross multiply
    28,292.94x = 39,046.68 × 15,718.50
  4. Step 4: Simplify right side
    28,292.94x = 613,755,239.58
  5. Step 5: Solve for x
    x = 613,755,239.58/28,292.94
  6. Step 6: Final answer
    x = 21,692.88

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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.