Home / 28,300.82-39,054.93-15,380.00

Finding the Fourth Proportional to 28,300.82, 39,054.93 and 15,380.00

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Solution

The fourth proportional to 28,300.82, 39,054.93 and 15,380.00 is: 21,224.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,300.82 : 39,054.93 = 15,380.00 : x
  2. Step 2: Convert to fraction form
    28,300.82/39,054.93 = 15,380.00/x
  3. Step 3: Cross multiply
    28,300.82x = 39,054.93 × 15,380.00
  4. Step 4: Simplify right side
    28,300.82x = 600,664,628.13
  5. Step 5: Solve for x
    x = 600,664,628.13/28,300.82
  6. Step 6: Final answer
    x = 21,224.28

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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.