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Finding the Fourth Proportional to 10,512, 15,770.16 and 4,356

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Solution

The fourth proportional to 10,512, 15,770.16 and 4,356 is: 6,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,512 : 15,770.16 = 4,356 : x
  2. Step 2: Convert to fraction form
    10,512/15,770.16 = 4,356/x
  3. Step 3: Cross multiply
    10,512x = 15,770.16 × 4,356
  4. Step 4: Simplify right side
    10,512x = 68,694,816.96
  5. Step 5: Solve for x
    x = 68,694,816.96/10,512
  6. Step 6: Final answer
    x = 6,534.90

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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.