Home / 21,879.93-30,130.78-19,007.36

Finding the Fourth Proportional to 21,879.93, 30,130.78 and 19,007.36

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Solution

The fourth proportional to 21,879.93, 30,130.78 and 19,007.36 is: 26,174.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,879.93 : 30,130.78 = 19,007.36 : x
  2. Step 2: Convert to fraction form
    21,879.93/30,130.78 = 19,007.36/x
  3. Step 3: Cross multiply
    21,879.93x = 30,130.78 × 19,007.36
  4. Step 4: Simplify right side
    21,879.93x = 572,706,348.73
  5. Step 5: Solve for x
    x = 572,706,348.73/21,879.93
  6. Step 6: Final answer
    x = 26,174.96

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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.