Home / 28,366.66-39,146.94-15,620.80

Finding the Fourth Proportional to 28,366.66, 39,146.94 and 15,620.80

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Solution

The fourth proportional to 28,366.66, 39,146.94 and 15,620.80 is: 21,557.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,366.66 : 39,146.94 = 15,620.80 : x
  2. Step 2: Convert to fraction form
    28,366.66/39,146.94 = 15,620.80/x
  3. Step 3: Cross multiply
    28,366.66x = 39,146.94 × 15,620.80
  4. Step 4: Simplify right side
    28,366.66x = 611,506,520.35
  5. Step 5: Solve for x
    x = 611,506,520.35/28,366.66
  6. Step 6: Final answer
    x = 21,557.23

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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.