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Finding the Fourth Proportional to 28,543.82, 42,803.66 and 8,556.14

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Solution

The fourth proportional to 28,543.82, 42,803.66 and 8,556.14 is: 12,830.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.82 : 42,803.66 = 8,556.14 : x
  2. Step 2: Convert to fraction form
    28,543.82/42,803.66 = 8,556.14/x
  3. Step 3: Cross multiply
    28,543.82x = 42,803.66 × 8,556.14
  4. Step 4: Simplify right side
    28,543.82x = 366,234,107.47
  5. Step 5: Solve for x
    x = 366,234,107.47/28,543.82
  6. Step 6: Final answer
    x = 12,830.59

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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.