Home / 20,896.80-28,838.04-11,465.37

Finding the Fourth Proportional to 20,896.80, 28,838.04 and 11,465.37

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Solution

The fourth proportional to 20,896.80, 28,838.04 and 11,465.37 is: 15,822.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.80 : 28,838.04 = 11,465.37 : x
  2. Step 2: Convert to fraction form
    20,896.80/28,838.04 = 11,465.37/x
  3. Step 3: Cross multiply
    20,896.80x = 28,838.04 × 11,465.37
  4. Step 4: Simplify right side
    20,896.80x = 330,638,798.67
  5. Step 5: Solve for x
    x = 330,638,798.67/20,896.80
  6. Step 6: Final answer
    x = 15,822.46

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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.