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Finding the Fourth Proportional to 28,963.56, 43,447.88 and 8,187.06

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Solution

The fourth proportional to 28,963.56, 43,447.88 and 8,187.06 is: 12,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,963.56 : 43,447.88 = 8,187.06 : x
  2. Step 2: Convert to fraction form
    28,963.56/43,447.88 = 8,187.06/x
  3. Step 3: Cross multiply
    28,963.56x = 43,447.88 × 8,187.06
  4. Step 4: Simplify right side
    28,963.56x = 355,710,400.43
  5. Step 5: Solve for x
    x = 355,710,400.43/28,963.56
  6. Step 6: Final answer
    x = 12,281.31

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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.