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Finding the Fourth Proportional to 18,744.74, 28,117.08 and 4,893.74

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Solution

The fourth proportional to 18,744.74, 28,117.08 and 4,893.74 is: 7,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.74 : 28,117.08 = 4,893.74 : x
  2. Step 2: Convert to fraction form
    18,744.74/28,117.08 = 4,893.74/x
  3. Step 3: Cross multiply
    18,744.74x = 28,117.08 × 4,893.74
  4. Step 4: Simplify right side
    18,744.74x = 137,597,538.49
  5. Step 5: Solve for x
    x = 137,597,538.49/18,744.74
  6. Step 6: Final answer
    x = 7,340.60

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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.