Home / 19,928.76-29,883-11,161.32

Finding the Fourth Proportional to 19,928.76, 29,883 and 11,161.32

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Solution

The fourth proportional to 19,928.76, 29,883 and 11,161.32 is: 16,736.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928.76 : 29,883 = 11,161.32 : x
  2. Step 2: Convert to fraction form
    19,928.76/29,883 = 11,161.32/x
  3. Step 3: Cross multiply
    19,928.76x = 29,883 × 11,161.32
  4. Step 4: Simplify right side
    19,928.76x = 333,533,725.56
  5. Step 5: Solve for x
    x = 333,533,725.56/19,928.76
  6. Step 6: Final answer
    x = 16,736.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.