Home / 19,903.37-27,434.78-15,107.69

Finding the Fourth Proportional to 19,903.37, 27,434.78 and 15,107.69

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Solution

The fourth proportional to 19,903.37, 27,434.78 and 15,107.69 is: 20,824.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,903.37 : 27,434.78 = 15,107.69 : x
  2. Step 2: Convert to fraction form
    19,903.37/27,434.78 = 15,107.69/x
  3. Step 3: Cross multiply
    19,903.37x = 27,434.78 × 15,107.69
  4. Step 4: Simplify right side
    19,903.37x = 414,476,081.51
  5. Step 5: Solve for x
    x = 414,476,081.51/19,903.37
  6. Step 6: Final answer
    x = 20,824.42

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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.