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Finding the Fourth Proportional to 28,975.74, 43,471.86 and 9,255.84

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Solution

The fourth proportional to 28,975.74, 43,471.86 and 9,255.84 is: 13,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,975.74 : 43,471.86 = 9,255.84 : x
  2. Step 2: Convert to fraction form
    28,975.74/43,471.86 = 9,255.84/x
  3. Step 3: Cross multiply
    28,975.74x = 43,471.86 × 9,255.84
  4. Step 4: Simplify right side
    28,975.74x = 402,368,580.66
  5. Step 5: Solve for x
    x = 402,368,580.66/28,975.74
  6. Step 6: Final answer
    x = 13,886.40

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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.