Home / 20,362.32-28,099.21-11,409.37

Finding the Fourth Proportional to 20,362.32, 28,099.21 and 11,409.37

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Solution

The fourth proportional to 20,362.32, 28,099.21 and 11,409.37 is: 15,744.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.32 : 28,099.21 = 11,409.37 : x
  2. Step 2: Convert to fraction form
    20,362.32/28,099.21 = 11,409.37/x
  3. Step 3: Cross multiply
    20,362.32x = 28,099.21 × 11,409.37
  4. Step 4: Simplify right side
    20,362.32x = 320,594,184.83
  5. Step 5: Solve for x
    x = 320,594,184.83/20,362.32
  6. Step 6: Final answer
    x = 15,744.48

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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.