Home / 28,272.50-39,014.08-15,696.26

Finding the Fourth Proportional to 28,272.50, 39,014.08 and 15,696.26

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Solution

The fourth proportional to 28,272.50, 39,014.08 and 15,696.26 is: 21,659.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.50 : 39,014.08 = 15,696.26 : x
  2. Step 2: Convert to fraction form
    28,272.50/39,014.08 = 15,696.26/x
  3. Step 3: Cross multiply
    28,272.50x = 39,014.08 × 15,696.26
  4. Step 4: Simplify right side
    28,272.50x = 612,375,143.34
  5. Step 5: Solve for x
    x = 612,375,143.34/28,272.50
  6. Step 6: Final answer
    x = 21,659.75

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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.