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Finding the Fourth Proportional to 28,618.83, 42,935.54 and 8,897.55

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Solution

The fourth proportional to 28,618.83, 42,935.54 and 8,897.55 is: 13,348.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,618.83 : 42,935.54 = 8,897.55 : x
  2. Step 2: Convert to fraction form
    28,618.83/42,935.54 = 8,897.55/x
  3. Step 3: Cross multiply
    28,618.83x = 42,935.54 × 8,897.55
  4. Step 4: Simplify right side
    28,618.83x = 382,021,069.44
  5. Step 5: Solve for x
    x = 382,021,069.44/28,618.83
  6. Step 6: Final answer
    x = 13,348.59

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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.