Home / 28,071.75-38,739.09-15,496.50

Finding the Fourth Proportional to 28,071.75, 38,739.09 and 15,496.50

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Solution

The fourth proportional to 28,071.75, 38,739.09 and 15,496.50 is: 21,385.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.75 : 38,739.09 = 15,496.50 : x
  2. Step 2: Convert to fraction form
    28,071.75/38,739.09 = 15,496.50/x
  3. Step 3: Cross multiply
    28,071.75x = 38,739.09 × 15,496.50
  4. Step 4: Simplify right side
    28,071.75x = 600,320,308.19
  5. Step 5: Solve for x
    x = 600,320,308.19/28,071.75
  6. Step 6: Final answer
    x = 21,385.21

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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.