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Finding the Fourth Proportional to 14,618.95, 21,928.63 and 4,758.28

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Solution

The fourth proportional to 14,618.95, 21,928.63 and 4,758.28 is: 7,137.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,618.95 : 21,928.63 = 4,758.28 : x
  2. Step 2: Convert to fraction form
    14,618.95/21,928.63 = 4,758.28/x
  3. Step 3: Cross multiply
    14,618.95x = 21,928.63 × 4,758.28
  4. Step 4: Simplify right side
    14,618.95x = 104,342,561.56
  5. Step 5: Solve for x
    x = 104,342,561.56/14,618.95
  6. Step 6: Final answer
    x = 7,137.49

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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.