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Finding the Fourth Proportional to 18,692, 25,795.28 and 12,079.52

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Solution

The fourth proportional to 18,692, 25,795.28 and 12,079.52 is: 16,669.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692 : 25,795.28 = 12,079.52 : x
  2. Step 2: Convert to fraction form
    18,692/25,795.28 = 12,079.52/x
  3. Step 3: Cross multiply
    18,692x = 25,795.28 × 12,079.52
  4. Step 4: Simplify right side
    18,692x = 311,594,600.67
  5. Step 5: Solve for x
    x = 311,594,600.67/18,692
  6. Step 6: Final answer
    x = 16,669.94

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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.