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Finding the Fourth Proportional to 15,613.84, 21,553.32 and 9,325

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Solution

The fourth proportional to 15,613.84, 21,553.32 and 9,325 is: 12,872.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.84 : 21,553.32 = 9,325 : x
  2. Step 2: Convert to fraction form
    15,613.84/21,553.32 = 9,325/x
  3. Step 3: Cross multiply
    15,613.84x = 21,553.32 × 9,325
  4. Step 4: Simplify right side
    15,613.84x = 200,984,709
  5. Step 5: Solve for x
    x = 200,984,709/15,613.84
  6. Step 6: Final answer
    x = 12,872.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.