Home / 21,790.44-30,029.94-15,491.88

Finding the Fourth Proportional to 21,790.44, 30,029.94 and 15,491.88

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Solution

The fourth proportional to 21,790.44, 30,029.94 and 15,491.88 is: 21,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.44 : 30,029.94 = 15,491.88 : x
  2. Step 2: Convert to fraction form
    21,790.44/30,029.94 = 15,491.88/x
  3. Step 3: Cross multiply
    21,790.44x = 30,029.94 × 15,491.88
  4. Step 4: Simplify right side
    21,790.44x = 465,220,226.89
  5. Step 5: Solve for x
    x = 465,220,226.89/21,790.44
  6. Step 6: Final answer
    x = 21,349.74

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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.