Home / 20,122.89-30,185.16-9,587.49

Finding the Fourth Proportional to 20,122.89, 30,185.16 and 9,587.49

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Solution

The fourth proportional to 20,122.89, 30,185.16 and 9,587.49 is: 14,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.89 : 30,185.16 = 9,587.49 : x
  2. Step 2: Convert to fraction form
    20,122.89/30,185.16 = 9,587.49/x
  3. Step 3: Cross multiply
    20,122.89x = 30,185.16 × 9,587.49
  4. Step 4: Simplify right side
    20,122.89x = 289,399,919.65
  5. Step 5: Solve for x
    x = 289,399,919.65/20,122.89
  6. Step 6: Final answer
    x = 14,381.63

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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.