Home / 20,219.22-27,870.21-13,491.54

Finding the Fourth Proportional to 20,219.22, 27,870.21 and 13,491.54

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Solution

The fourth proportional to 20,219.22, 27,870.21 and 13,491.54 is: 18,596.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.22 : 27,870.21 = 13,491.54 : x
  2. Step 2: Convert to fraction form
    20,219.22/27,870.21 = 13,491.54/x
  3. Step 3: Cross multiply
    20,219.22x = 27,870.21 × 13,491.54
  4. Step 4: Simplify right side
    20,219.22x = 376,012,053.02
  5. Step 5: Solve for x
    x = 376,012,053.02/20,219.22
  6. Step 6: Final answer
    x = 18,596.76

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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.