Home / 28,667.32-39,580.19-21,940.95

Finding the Fourth Proportional to 28,667.32, 39,580.19 and 21,940.95

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Solution

The fourth proportional to 28,667.32, 39,580.19 and 21,940.95 is: 30,293.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,667.32 : 39,580.19 = 21,940.95 : x
  2. Step 2: Convert to fraction form
    28,667.32/39,580.19 = 21,940.95/x
  3. Step 3: Cross multiply
    28,667.32x = 39,580.19 × 21,940.95
  4. Step 4: Simplify right side
    28,667.32x = 868,426,969.78
  5. Step 5: Solve for x
    x = 868,426,969.78/28,667.32
  6. Step 6: Final answer
    x = 30,293.27

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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.