Home / 21,782.03-30,059.19-12,350.57

Finding the Fourth Proportional to 21,782.03, 30,059.19 and 12,350.57

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Solution

The fourth proportional to 21,782.03, 30,059.19 and 12,350.57 is: 17,043.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,782.03 : 30,059.19 = 12,350.57 : x
  2. Step 2: Convert to fraction form
    21,782.03/30,059.19 = 12,350.57/x
  3. Step 3: Cross multiply
    21,782.03x = 30,059.19 × 12,350.57
  4. Step 4: Simplify right side
    21,782.03x = 371,247,979.94
  5. Step 5: Solve for x
    x = 371,247,979.94/21,782.03
  6. Step 6: Final answer
    x = 17,043.78

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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.