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Finding the Fourth Proportional to 14,458.42, 21,689.06 and 3,928.60

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Solution

The fourth proportional to 14,458.42, 21,689.06 and 3,928.60 is: 5,893.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,458.42 : 21,689.06 = 3,928.60 : x
  2. Step 2: Convert to fraction form
    14,458.42/21,689.06 = 3,928.60/x
  3. Step 3: Cross multiply
    14,458.42x = 21,689.06 × 3,928.60
  4. Step 4: Simplify right side
    14,458.42x = 85,207,641.12
  5. Step 5: Solve for x
    x = 85,207,641.12/14,458.42
  6. Step 6: Final answer
    x = 5,893.29

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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.