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Finding the Fourth Proportional to 28,955, 43,432.68 and 8,178.68

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Solution

The fourth proportional to 28,955, 43,432.68 and 8,178.68 is: 12,268.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,955 : 43,432.68 = 8,178.68 : x
  2. Step 2: Convert to fraction form
    28,955/43,432.68 = 8,178.68/x
  3. Step 3: Cross multiply
    28,955x = 43,432.68 × 8,178.68
  4. Step 4: Simplify right side
    28,955x = 355,221,991.26
  5. Step 5: Solve for x
    x = 355,221,991.26/28,955
  6. Step 6: Final answer
    x = 12,268.07

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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.