Home / 20,115.36-30,186.90-9,034.47

Finding the Fourth Proportional to 20,115.36, 30,186.90 and 9,034.47

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Solution

The fourth proportional to 20,115.36, 30,186.90 and 9,034.47 is: 13,557.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.36 : 30,186.90 = 9,034.47 : x
  2. Step 2: Convert to fraction form
    20,115.36/30,186.90 = 9,034.47/x
  3. Step 3: Cross multiply
    20,115.36x = 30,186.90 × 9,034.47
  4. Step 4: Simplify right side
    20,115.36x = 272,722,642.44
  5. Step 5: Solve for x
    x = 272,722,642.44/20,115.36
  6. Step 6: Final answer
    x = 13,557.93

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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.