Home / 28,407.07-39,199.99-15,659.60

Finding the Fourth Proportional to 28,407.07, 39,199.99 and 15,659.60

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Solution

The fourth proportional to 28,407.07, 39,199.99 and 15,659.60 is: 21,609.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.07 : 39,199.99 = 15,659.60 : x
  2. Step 2: Convert to fraction form
    28,407.07/39,199.99 = 15,659.60/x
  3. Step 3: Cross multiply
    28,407.07x = 39,199.99 × 15,659.60
  4. Step 4: Simplify right side
    28,407.07x = 613,856,163.40
  5. Step 5: Solve for x
    x = 613,856,163.40/28,407.07
  6. Step 6: Final answer
    x = 21,609.27

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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.