Home / 28,456.66-39,271.26-15,883.84

Finding the Fourth Proportional to 28,456.66, 39,271.26 and 15,883.84

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Solution

The fourth proportional to 28,456.66, 39,271.26 and 15,883.84 is: 21,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.66 : 39,271.26 = 15,883.84 : x
  2. Step 2: Convert to fraction form
    28,456.66/39,271.26 = 15,883.84/x
  3. Step 3: Cross multiply
    28,456.66x = 39,271.26 × 15,883.84
  4. Step 4: Simplify right side
    28,456.66x = 623,778,410.44
  5. Step 5: Solve for x
    x = 623,778,410.44/28,456.66
  6. Step 6: Final answer
    x = 21,920.30

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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.