Home / 20,896.90-28,838.18-11,465.48

Finding the Fourth Proportional to 20,896.90, 28,838.18 and 11,465.48

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Solution

The fourth proportional to 20,896.90, 28,838.18 and 11,465.48 is: 15,822.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.90 : 28,838.18 = 11,465.48 : x
  2. Step 2: Convert to fraction form
    20,896.90/28,838.18 = 11,465.48/x
  3. Step 3: Cross multiply
    20,896.90x = 28,838.18 × 11,465.48
  4. Step 4: Simplify right side
    20,896.90x = 330,643,576.03
  5. Step 5: Solve for x
    x = 330,643,576.03/20,896.90
  6. Step 6: Final answer
    x = 15,822.61

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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.