Home / 28,374.97-39,157.09-15,627.91

Finding the Fourth Proportional to 28,374.97, 39,157.09 and 15,627.91

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Solution

The fourth proportional to 28,374.97, 39,157.09 and 15,627.91 is: 21,566.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.97 : 39,157.09 = 15,627.91 : x
  2. Step 2: Convert to fraction form
    28,374.97/39,157.09 = 15,627.91/x
  3. Step 3: Cross multiply
    28,374.97x = 39,157.09 × 15,627.91
  4. Step 4: Simplify right side
    28,374.97x = 611,943,341.42
  5. Step 5: Solve for x
    x = 611,943,341.42/28,374.97
  6. Step 6: Final answer
    x = 21,566.31

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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.