Home / 22,455.05-30,990.04-12,896.19

Finding the Fourth Proportional to 22,455.05, 30,990.04 and 12,896.19

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Solution

The fourth proportional to 22,455.05, 30,990.04 and 12,896.19 is: 17,797.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,455.05 : 30,990.04 = 12,896.19 : x
  2. Step 2: Convert to fraction form
    22,455.05/30,990.04 = 12,896.19/x
  3. Step 3: Cross multiply
    22,455.05x = 30,990.04 × 12,896.19
  4. Step 4: Simplify right side
    22,455.05x = 399,653,224.52
  5. Step 5: Solve for x
    x = 399,653,224.52/22,455.05
  6. Step 6: Final answer
    x = 17,797.93

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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.