Home / 21,522.32-29,706.66-13,968.21

Finding the Fourth Proportional to 21,522.32, 29,706.66 and 13,968.21

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Solution

The fourth proportional to 21,522.32, 29,706.66 and 13,968.21 is: 19,279.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,522.32 : 29,706.66 = 13,968.21 : x
  2. Step 2: Convert to fraction form
    21,522.32/29,706.66 = 13,968.21/x
  3. Step 3: Cross multiply
    21,522.32x = 29,706.66 × 13,968.21
  4. Step 4: Simplify right side
    21,522.32x = 414,948,753.88
  5. Step 5: Solve for x
    x = 414,948,753.88/21,522.32
  6. Step 6: Final answer
    x = 19,279.93

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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.