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Finding the Fourth Proportional to 28,912, 43,374.72 and 14,866.72

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Solution

The fourth proportional to 28,912, 43,374.72 and 14,866.72 is: 22,303.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912 : 43,374.72 = 14,866.72 : x
  2. Step 2: Convert to fraction form
    28,912/43,374.72 = 14,866.72/x
  3. Step 3: Cross multiply
    28,912x = 43,374.72 × 14,866.72
  4. Step 4: Simplify right side
    28,912x = 644,839,817.32
  5. Step 5: Solve for x
    x = 644,839,817.32/28,912
  6. Step 6: Final answer
    x = 22,303.54

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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.