Home / 21,790.24-30,059.10-17,991.24

Finding the Fourth Proportional to 21,790.24, 30,059.10 and 17,991.24

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Solution

The fourth proportional to 21,790.24, 30,059.10 and 17,991.24 is: 24,818.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.24 : 30,059.10 = 17,991.24 : x
  2. Step 2: Convert to fraction form
    21,790.24/30,059.10 = 17,991.24/x
  3. Step 3: Cross multiply
    21,790.24x = 30,059.10 × 17,991.24
  4. Step 4: Simplify right side
    21,790.24x = 540,800,454.10
  5. Step 5: Solve for x
    x = 540,800,454.10/21,790.24
  6. Step 6: Final answer
    x = 24,818.47

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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.