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Finding the Fourth Proportional to 28,411.92, 42,621.48 and 9,695.52

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Solution

The fourth proportional to 28,411.92, 42,621.48 and 9,695.52 is: 14,544.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.92 : 42,621.48 = 9,695.52 : x
  2. Step 2: Convert to fraction form
    28,411.92/42,621.48 = 9,695.52/x
  3. Step 3: Cross multiply
    28,411.92x = 42,621.48 × 9,695.52
  4. Step 4: Simplify right side
    28,411.92x = 413,237,411.77
  5. Step 5: Solve for x
    x = 413,237,411.77/28,411.92
  6. Step 6: Final answer
    x = 14,544.51

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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.