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Finding the Fourth Proportional to 28,597.11, 42,890.39 and 11,952.68

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Solution

The fourth proportional to 28,597.11, 42,890.39 and 11,952.68 is: 17,926.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,597.11 : 42,890.39 = 11,952.68 : x
  2. Step 2: Convert to fraction form
    28,597.11/42,890.39 = 11,952.68/x
  3. Step 3: Cross multiply
    28,597.11x = 42,890.39 × 11,952.68
  4. Step 4: Simplify right side
    28,597.11x = 512,654,832.53
  5. Step 5: Solve for x
    x = 512,654,832.53/28,597.11
  6. Step 6: Final answer
    x = 17,926.81

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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.