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Finding the Fourth Proportional to 18,667.58, 28,001.03 and 4,627.64

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Solution

The fourth proportional to 18,667.58, 28,001.03 and 4,627.64 is: 6,941.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.58 : 28,001.03 = 4,627.64 : x
  2. Step 2: Convert to fraction form
    18,667.58/28,001.03 = 4,627.64/x
  3. Step 3: Cross multiply
    18,667.58x = 28,001.03 × 4,627.64
  4. Step 4: Simplify right side
    18,667.58x = 129,578,523.33
  5. Step 5: Solve for x
    x = 129,578,523.33/18,667.58
  6. Step 6: Final answer
    x = 6,941.37

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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.