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Finding the Fourth Proportional to 18,858.47, 28,244.62 and 9,004.65

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Solution

The fourth proportional to 18,858.47, 28,244.62 and 9,004.65 is: 13,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.47 : 28,244.62 = 9,004.65 : x
  2. Step 2: Convert to fraction form
    18,858.47/28,244.62 = 9,004.65/x
  3. Step 3: Cross multiply
    18,858.47x = 28,244.62 × 9,004.65
  4. Step 4: Simplify right side
    18,858.47x = 254,332,872.46
  5. Step 5: Solve for x
    x = 254,332,872.46/18,858.47
  6. Step 6: Final answer
    x = 13,486.40

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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.