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Finding the Fourth Proportional to 18,795.73, 25,878.94 and 15,957.49

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Solution

The fourth proportional to 18,795.73, 25,878.94 and 15,957.49 is: 21,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795.73 : 25,878.94 = 15,957.49 : x
  2. Step 2: Convert to fraction form
    18,795.73/25,878.94 = 15,957.49/x
  3. Step 3: Cross multiply
    18,795.73x = 25,878.94 × 15,957.49
  4. Step 4: Simplify right side
    18,795.73x = 412,962,926.26
  5. Step 5: Solve for x
    x = 412,962,926.26/18,795.73
  6. Step 6: Final answer
    x = 21,971.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.