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Finding the Fourth Proportional to 28,663.92, 42,993.84 and 7,603.50

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Solution

The fourth proportional to 28,663.92, 42,993.84 and 7,603.50 is: 11,404.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.92 : 42,993.84 = 7,603.50 : x
  2. Step 2: Convert to fraction form
    28,663.92/42,993.84 = 7,603.50/x
  3. Step 3: Cross multiply
    28,663.92x = 42,993.84 × 7,603.50
  4. Step 4: Simplify right side
    28,663.92x = 326,903,662.44
  5. Step 5: Solve for x
    x = 326,903,662.44/28,663.92
  6. Step 6: Final answer
    x = 11,404.71

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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.