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Finding the Fourth Proportional to 12,603.92, 18,865.47 and 8,377.47

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Solution

The fourth proportional to 12,603.92, 18,865.47 and 8,377.47 is: 12,539.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.92 : 18,865.47 = 8,377.47 : x
  2. Step 2: Convert to fraction form
    12,603.92/18,865.47 = 8,377.47/x
  3. Step 3: Cross multiply
    12,603.92x = 18,865.47 × 8,377.47
  4. Step 4: Simplify right side
    12,603.92x = 158,044,908.96
  5. Step 5: Solve for x
    x = 158,044,908.96/12,603.92
  6. Step 6: Final answer
    x = 12,539.35

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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.