Home / 28,322.25-39,084.71-15,749.43

Finding the Fourth Proportional to 28,322.25, 39,084.71 and 15,749.43

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Solution

The fourth proportional to 28,322.25, 39,084.71 and 15,749.43 is: 21,734.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,322.25 : 39,084.71 = 15,749.43 : x
  2. Step 2: Convert to fraction form
    28,322.25/39,084.71 = 15,749.43/x
  3. Step 3: Cross multiply
    28,322.25x = 39,084.71 × 15,749.43
  4. Step 4: Simplify right side
    28,322.25x = 615,561,825.47
  5. Step 5: Solve for x
    x = 615,561,825.47/28,322.25
  6. Step 6: Final answer
    x = 21,734.21

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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.