Home / 15,611.88-21,544.40-8,538.36

Finding the Fourth Proportional to 15,611.88, 21,544.40 and 8,538.36

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Solution

The fourth proportional to 15,611.88, 21,544.40 and 8,538.36 is: 11,782.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.88 : 21,544.40 = 8,538.36 : x
  2. Step 2: Convert to fraction form
    15,611.88/21,544.40 = 8,538.36/x
  3. Step 3: Cross multiply
    15,611.88x = 21,544.40 × 8,538.36
  4. Step 4: Simplify right side
    15,611.88x = 183,953,843.18
  5. Step 5: Solve for x
    x = 183,953,843.18/15,611.88
  6. Step 6: Final answer
    x = 11,782.94

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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.