Home / 20,293.08-28,009.98-11,912.28

Finding the Fourth Proportional to 20,293.08, 28,009.98 and 11,912.28

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Solution

The fourth proportional to 20,293.08, 28,009.98 and 11,912.28 is: 16,442.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.08 : 28,009.98 = 11,912.28 : x
  2. Step 2: Convert to fraction form
    20,293.08/28,009.98 = 11,912.28/x
  3. Step 3: Cross multiply
    20,293.08x = 28,009.98 × 11,912.28
  4. Step 4: Simplify right side
    20,293.08x = 333,662,724.55
  5. Step 5: Solve for x
    x = 333,662,724.55/20,293.08
  6. Step 6: Final answer
    x = 16,442.19

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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.