Home / 28,074.80-42,111.84-8,084.78

Finding the Fourth Proportional to 28,074.80, 42,111.84 and 8,084.78

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Solution

The fourth proportional to 28,074.80, 42,111.84 and 8,084.78 is: 12,127.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.80 : 42,111.84 = 8,084.78 : x
  2. Step 2: Convert to fraction form
    28,074.80/42,111.84 = 8,084.78/x
  3. Step 3: Cross multiply
    28,074.80x = 42,111.84 × 8,084.78
  4. Step 4: Simplify right side
    28,074.80x = 340,464,961.80
  5. Step 5: Solve for x
    x = 340,464,961.80/28,074.80
  6. Step 6: Final answer
    x = 12,127.07

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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.