Home / 13,706.42-18,915.33-8,400.22

Finding the Fourth Proportional to 13,706.42, 18,915.33 and 8,400.22

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Solution

The fourth proportional to 13,706.42, 18,915.33 and 8,400.22 is: 11,592.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706.42 : 18,915.33 = 8,400.22 : x
  2. Step 2: Convert to fraction form
    13,706.42/18,915.33 = 8,400.22/x
  3. Step 3: Cross multiply
    13,706.42x = 18,915.33 × 8,400.22
  4. Step 4: Simplify right side
    13,706.42x = 158,892,796.79
  5. Step 5: Solve for x
    x = 158,892,796.79/13,706.42
  6. Step 6: Final answer
    x = 11,592.58

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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.