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Finding the Fourth Proportional to 28,852.86, 43,274.95 and 9,128.85

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Solution

The fourth proportional to 28,852.86, 43,274.95 and 9,128.85 is: 13,691.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,852.86 : 43,274.95 = 9,128.85 : x
  2. Step 2: Convert to fraction form
    28,852.86/43,274.95 = 9,128.85/x
  3. Step 3: Cross multiply
    28,852.86x = 43,274.95 × 9,128.85
  4. Step 4: Simplify right side
    28,852.86x = 395,050,585.63
  5. Step 5: Solve for x
    x = 395,050,585.63/28,852.86
  6. Step 6: Final answer
    x = 13,691.90

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1.5x scale

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.