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Finding the Fourth Proportional to 28,978.08, 43,411.95 and 16,506.69

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Solution

The fourth proportional to 28,978.08, 43,411.95 and 16,506.69 is: 24,728.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978.08 : 43,411.95 = 16,506.69 : x
  2. Step 2: Convert to fraction form
    28,978.08/43,411.95 = 16,506.69/x
  3. Step 3: Cross multiply
    28,978.08x = 43,411.95 × 16,506.69
  4. Step 4: Simplify right side
    28,978.08x = 716,587,600.95
  5. Step 5: Solve for x
    x = 716,587,600.95/28,978.08
  6. Step 6: Final answer
    x = 24,728.61

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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.