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Finding the Fourth Proportional to 28,393.92, 42,594.99 and 8,669.93

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Solution

The fourth proportional to 28,393.92, 42,594.99 and 8,669.93 is: 13,006.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.92 : 42,594.99 = 8,669.93 : x
  2. Step 2: Convert to fraction form
    28,393.92/42,594.99 = 8,669.93/x
  3. Step 3: Cross multiply
    28,393.92x = 42,594.99 × 8,669.93
  4. Step 4: Simplify right side
    28,393.92x = 369,295,368.68
  5. Step 5: Solve for x
    x = 369,295,368.68/28,393.92
  6. Step 6: Final answer
    x = 13,006.14

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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.