Home / 28,611.88-39,486.22-15,866.52

Finding the Fourth Proportional to 28,611.88, 39,486.22 and 15,866.52

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Solution

The fourth proportional to 28,611.88, 39,486.22 and 15,866.52 is: 21,896.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.88 : 39,486.22 = 15,866.52 : x
  2. Step 2: Convert to fraction form
    28,611.88/39,486.22 = 15,866.52/x
  3. Step 3: Cross multiply
    28,611.88x = 39,486.22 × 15,866.52
  4. Step 4: Simplify right side
    28,611.88x = 626,508,899.35
  5. Step 5: Solve for x
    x = 626,508,899.35/28,611.88
  6. Step 6: Final answer
    x = 21,896.81

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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.