Home / 28,261.88-39,003.22-15,686.62

Finding the Fourth Proportional to 28,261.88, 39,003.22 and 15,686.62

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Solution

The fourth proportional to 28,261.88, 39,003.22 and 15,686.62 is: 21,648.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.88 : 39,003.22 = 15,686.62 : x
  2. Step 2: Convert to fraction form
    28,261.88/39,003.22 = 15,686.62/x
  3. Step 3: Cross multiply
    28,261.88x = 39,003.22 × 15,686.62
  4. Step 4: Simplify right side
    28,261.88x = 611,828,690.92
  5. Step 5: Solve for x
    x = 611,828,690.92/28,261.88
  6. Step 6: Final answer
    x = 21,648.55

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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.