Home / 28,447.88-39,258.07-15,872.63

Finding the Fourth Proportional to 28,447.88, 39,258.07 and 15,872.63

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Solution

The fourth proportional to 28,447.88, 39,258.07 and 15,872.63 is: 21,904.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.88 : 39,258.07 = 15,872.63 : x
  2. Step 2: Convert to fraction form
    28,447.88/39,258.07 = 15,872.63/x
  3. Step 3: Cross multiply
    28,447.88x = 39,258.07 × 15,872.63
  4. Step 4: Simplify right side
    28,447.88x = 623,128,583.65
  5. Step 5: Solve for x
    x = 623,128,583.65/28,447.88
  6. Step 6: Final answer
    x = 21,904.22

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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.