Home / 39,611.88-54,664.40-21,706.72

Finding the Fourth Proportional to 39,611.88, 54,664.40 and 21,706.72

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Solution

The fourth proportional to 39,611.88, 54,664.40 and 21,706.72 is: 29,955.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,611.88 : 54,664.40 = 21,706.72 : x
  2. Step 2: Convert to fraction form
    39,611.88/54,664.40 = 21,706.72/x
  3. Step 3: Cross multiply
    39,611.88x = 54,664.40 × 21,706.72
  4. Step 4: Simplify right side
    39,611.88x = 1,186,584,824.77
  5. Step 5: Solve for x
    x = 1,186,584,824.77/39,611.88
  6. Step 6: Final answer
    x = 29,955.28

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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.