Home / 28,138.20-42,185.41-14,091.01

Finding the Fourth Proportional to 28,138.20, 42,185.41 and 14,091.01

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Solution

The fourth proportional to 28,138.20, 42,185.41 and 14,091.01 is: 21,125.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.20 : 42,185.41 = 14,091.01 : x
  2. Step 2: Convert to fraction form
    28,138.20/42,185.41 = 14,091.01/x
  3. Step 3: Cross multiply
    28,138.20x = 42,185.41 × 14,091.01
  4. Step 4: Simplify right side
    28,138.20x = 594,435,034.16
  5. Step 5: Solve for x
    x = 594,435,034.16/28,138.20
  6. Step 6: Final answer
    x = 21,125.55

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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.