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Finding the Fourth Proportional to 12,537.95, 18,799.98 and 5,147.62

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Solution

The fourth proportional to 12,537.95, 18,799.98 and 5,147.62 is: 7,718.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,537.95 : 18,799.98 = 5,147.62 : x
  2. Step 2: Convert to fraction form
    12,537.95/18,799.98 = 5,147.62/x
  3. Step 3: Cross multiply
    12,537.95x = 18,799.98 × 5,147.62
  4. Step 4: Simplify right side
    12,537.95x = 96,775,153.05
  5. Step 5: Solve for x
    x = 96,775,153.05/12,537.95
  6. Step 6: Final answer
    x = 7,718.58

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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.