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Finding the Fourth Proportional to 28,708.35, 43,070.76 and 12,059.82

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Solution

The fourth proportional to 28,708.35, 43,070.76 and 12,059.82 is: 18,093.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.35 : 43,070.76 = 12,059.82 : x
  2. Step 2: Convert to fraction form
    28,708.35/43,070.76 = 12,059.82/x
  3. Step 3: Cross multiply
    28,708.35x = 43,070.76 × 12,059.82
  4. Step 4: Simplify right side
    28,708.35x = 519,425,612.86
  5. Step 5: Solve for x
    x = 519,425,612.86/28,708.35
  6. Step 6: Final answer
    x = 18,093.19

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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.