Home / 18,962.75-28,444.13-5,111.75

Finding the Fourth Proportional to 18,962.75, 28,444.13 and 5,111.75

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Solution

The fourth proportional to 18,962.75, 28,444.13 and 5,111.75 is: 7,667.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.75 : 28,444.13 = 5,111.75 : x
  2. Step 2: Convert to fraction form
    18,962.75/28,444.13 = 5,111.75/x
  3. Step 3: Cross multiply
    18,962.75x = 28,444.13 × 5,111.75
  4. Step 4: Simplify right side
    18,962.75x = 145,399,255.97
  5. Step 5: Solve for x
    x = 145,399,255.97/18,962.75
  6. Step 6: Final answer
    x = 7,667.63

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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.