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Finding the Fourth Proportional to 14,452.72, 21,696.34 and 8,612.08

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Solution

The fourth proportional to 14,452.72, 21,696.34 and 8,612.08 is: 12,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,452.72 : 21,696.34 = 8,612.08 : x
  2. Step 2: Convert to fraction form
    14,452.72/21,696.34 = 8,612.08/x
  3. Step 3: Cross multiply
    14,452.72x = 21,696.34 × 8,612.08
  4. Step 4: Simplify right side
    14,452.72x = 186,850,615.79
  5. Step 5: Solve for x
    x = 186,850,615.79/14,452.72
  6. Step 6: Final answer
    x = 12,928.40

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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.