Home / 19,801.08-29,707.86-11,912.22

Finding the Fourth Proportional to 19,801.08, 29,707.86 and 11,912.22

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Solution

The fourth proportional to 19,801.08, 29,707.86 and 11,912.22 is: 17,872.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,801.08 : 29,707.86 = 11,912.22 : x
  2. Step 2: Convert to fraction form
    19,801.08/29,707.86 = 11,912.22/x
  3. Step 3: Cross multiply
    19,801.08x = 29,707.86 × 11,912.22
  4. Step 4: Simplify right side
    19,801.08x = 353,886,564.05
  5. Step 5: Solve for x
    x = 353,886,564.05/19,801.08
  6. Step 6: Final answer
    x = 17,872.08

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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.