Home / 28,661.33-39,552.08-15,913.86

Finding the Fourth Proportional to 28,661.33, 39,552.08 and 15,913.86

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Solution

The fourth proportional to 28,661.33, 39,552.08 and 15,913.86 is: 21,960.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.33 : 39,552.08 = 15,913.86 : x
  2. Step 2: Convert to fraction form
    28,661.33/39,552.08 = 15,913.86/x
  3. Step 3: Cross multiply
    28,661.33x = 39,552.08 × 15,913.86
  4. Step 4: Simplify right side
    28,661.33x = 629,425,986.50
  5. Step 5: Solve for x
    x = 629,425,986.50/28,661.33
  6. Step 6: Final answer
    x = 21,960.81

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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.