Home / 28,310.80-42,467.14-12,728.46

Finding the Fourth Proportional to 28,310.80, 42,467.14 and 12,728.46

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Solution

The fourth proportional to 28,310.80, 42,467.14 and 12,728.46 is: 19,093.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.80 : 42,467.14 = 12,728.46 : x
  2. Step 2: Convert to fraction form
    28,310.80/42,467.14 = 12,728.46/x
  3. Step 3: Cross multiply
    28,310.80x = 42,467.14 × 12,728.46
  4. Step 4: Simplify right side
    28,310.80x = 540,541,292.80
  5. Step 5: Solve for x
    x = 540,541,292.80/28,310.80
  6. Step 6: Final answer
    x = 19,093.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.