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Finding the Fourth Proportional to 18,782.42, 28,154.93 and 9,393.79

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Solution

The fourth proportional to 18,782.42, 28,154.93 and 9,393.79 is: 14,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.42 : 28,154.93 = 9,393.79 : x
  2. Step 2: Convert to fraction form
    18,782.42/28,154.93 = 9,393.79/x
  3. Step 3: Cross multiply
    18,782.42x = 28,154.93 × 9,393.79
  4. Step 4: Simplify right side
    18,782.42x = 264,481,316.54
  5. Step 5: Solve for x
    x = 264,481,316.54/18,782.42
  6. Step 6: Final answer
    x = 14,081.32

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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.