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Finding the Fourth Proportional to 10,491.84, 15,740.04 and 5,816.16

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Solution

The fourth proportional to 10,491.84, 15,740.04 and 5,816.16 is: 8,725.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,491.84 : 15,740.04 = 5,816.16 : x
  2. Step 2: Convert to fraction form
    10,491.84/15,740.04 = 5,816.16/x
  3. Step 3: Cross multiply
    10,491.84x = 15,740.04 × 5,816.16
  4. Step 4: Simplify right side
    10,491.84x = 91,546,591.05
  5. Step 5: Solve for x
    x = 91,546,591.05/10,491.84
  6. Step 6: Final answer
    x = 8,725.50

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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.