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Finding the Fourth Proportional to 13,706.93, 18,915.66 and 8,045.03

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Solution

The fourth proportional to 13,706.93, 18,915.66 and 8,045.03 is: 11,102.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706.93 : 18,915.66 = 8,045.03 : x
  2. Step 2: Convert to fraction form
    13,706.93/18,915.66 = 8,045.03/x
  3. Step 3: Cross multiply
    13,706.93x = 18,915.66 × 8,045.03
  4. Step 4: Simplify right side
    13,706.93x = 152,177,052.17
  5. Step 5: Solve for x
    x = 152,177,052.17/13,706.93
  6. Step 6: Final answer
    x = 11,102.20

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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.