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Finding the Fourth Proportional to 12,706.53, 19,059.99 and 4,812.74

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Solution

The fourth proportional to 12,706.53, 19,059.99 and 4,812.74 is: 7,219.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,706.53 : 19,059.99 = 4,812.74 : x
  2. Step 2: Convert to fraction form
    12,706.53/19,059.99 = 4,812.74/x
  3. Step 3: Cross multiply
    12,706.53x = 19,059.99 × 4,812.74
  4. Step 4: Simplify right side
    12,706.53x = 91,730,744.62
  5. Step 5: Solve for x
    x = 91,730,744.62/12,706.53
  6. Step 6: Final answer
    x = 7,219.18

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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.