Home / 28,641.78-39,525.96-15,895.20

Finding the Fourth Proportional to 28,641.78, 39,525.96 and 15,895.20

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Solution

The fourth proportional to 28,641.78, 39,525.96 and 15,895.20 is: 21,935.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,641.78 : 39,525.96 = 15,895.20 : x
  2. Step 2: Convert to fraction form
    28,641.78/39,525.96 = 15,895.20/x
  3. Step 3: Cross multiply
    28,641.78x = 39,525.96 × 15,895.20
  4. Step 4: Simplify right side
    28,641.78x = 628,273,039.39
  5. Step 5: Solve for x
    x = 628,273,039.39/28,641.78
  6. Step 6: Final answer
    x = 21,935.54

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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.