Home / 28,449.66-39,261.60-15,876.84

Finding the Fourth Proportional to 28,449.66, 39,261.60 and 15,876.84

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Solution

The fourth proportional to 28,449.66, 39,261.60 and 15,876.84 is: 21,910.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.66 : 39,261.60 = 15,876.84 : x
  2. Step 2: Convert to fraction form
    28,449.66/39,261.60 = 15,876.84/x
  3. Step 3: Cross multiply
    28,449.66x = 39,261.60 × 15,876.84
  4. Step 4: Simplify right side
    28,449.66x = 623,350,141.34
  5. Step 5: Solve for x
    x = 623,350,141.34/28,449.66
  6. Step 6: Final answer
    x = 21,910.64

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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.