Home / 22,216.82-30,666.93-12,789.14

Finding the Fourth Proportional to 22,216.82, 30,666.93 and 12,789.14

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Solution

The fourth proportional to 22,216.82, 30,666.93 and 12,789.14 is: 17,653.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,216.82 : 30,666.93 = 12,789.14 : x
  2. Step 2: Convert to fraction form
    22,216.82/30,666.93 = 12,789.14/x
  3. Step 3: Cross multiply
    22,216.82x = 30,666.93 × 12,789.14
  4. Step 4: Simplify right side
    22,216.82x = 392,203,661.14
  5. Step 5: Solve for x
    x = 392,203,661.14/22,216.82
  6. Step 6: Final answer
    x = 17,653.46

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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.