Home / 21,889.04-30,199.38-12,455.24

Finding the Fourth Proportional to 21,889.04, 30,199.38 and 12,455.24

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Solution

The fourth proportional to 21,889.04, 30,199.38 and 12,455.24 is: 17,183.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.04 : 30,199.38 = 12,455.24 : x
  2. Step 2: Convert to fraction form
    21,889.04/30,199.38 = 12,455.24/x
  3. Step 3: Cross multiply
    21,889.04x = 30,199.38 × 12,455.24
  4. Step 4: Simplify right side
    21,889.04x = 376,140,525.75
  5. Step 5: Solve for x
    x = 376,140,525.75/21,889.04
  6. Step 6: Final answer
    x = 17,183.97

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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.