Home / 28,364.18-42,546.87-12,781.80

Finding the Fourth Proportional to 28,364.18, 42,546.87 and 12,781.80

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Solution

The fourth proportional to 28,364.18, 42,546.87 and 12,781.80 is: 19,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.18 : 42,546.87 = 12,781.80 : x
  2. Step 2: Convert to fraction form
    28,364.18/42,546.87 = 12,781.80/x
  3. Step 3: Cross multiply
    28,364.18x = 42,546.87 × 12,781.80
  4. Step 4: Simplify right side
    28,364.18x = 543,825,582.97
  5. Step 5: Solve for x
    x = 543,825,582.97/28,364.18
  6. Step 6: Final answer
    x = 19,172.97

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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.