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Finding the Fourth Proportional to 28,859.66, 39,826.62 and 16,284.68

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Solution

The fourth proportional to 28,859.66, 39,826.62 and 16,284.68 is: 22,473.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,859.66 : 39,826.62 = 16,284.68 : x
  2. Step 2: Convert to fraction form
    28,859.66/39,826.62 = 16,284.68/x
  3. Step 3: Cross multiply
    28,859.66x = 39,826.62 × 16,284.68
  4. Step 4: Simplify right side
    28,859.66x = 648,563,762.18
  5. Step 5: Solve for x
    x = 648,563,762.18/28,859.66
  6. Step 6: Final answer
    x = 22,473.02

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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.