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Finding the Fourth Proportional to 28,651.56, 42,958.28 and 14,616.68

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Solution

The fourth proportional to 28,651.56, 42,958.28 and 14,616.68 is: 21,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,651.56 : 42,958.28 = 14,616.68 : x
  2. Step 2: Convert to fraction form
    28,651.56/42,958.28 = 14,616.68/x
  3. Step 3: Cross multiply
    28,651.56x = 42,958.28 × 14,616.68
  4. Step 4: Simplify right side
    28,651.56x = 627,907,432.11
  5. Step 5: Solve for x
    x = 627,907,432.11/28,651.56
  6. Step 6: Final answer
    x = 21,915.30

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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.