Home / 22,289.32-30,739.64-13,790.09

Finding the Fourth Proportional to 22,289.32, 30,739.64 and 13,790.09

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Solution

The fourth proportional to 22,289.32, 30,739.64 and 13,790.09 is: 19,018.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,289.32 : 30,739.64 = 13,790.09 : x
  2. Step 2: Convert to fraction form
    22,289.32/30,739.64 = 13,790.09/x
  3. Step 3: Cross multiply
    22,289.32x = 30,739.64 × 13,790.09
  4. Step 4: Simplify right side
    22,289.32x = 423,902,410.07
  5. Step 5: Solve for x
    x = 423,902,410.07/22,289.32
  6. Step 6: Final answer
    x = 19,018.18

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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.