Home / 18,315.32-27,453.40-13,105.40

Finding the Fourth Proportional to 18,315.32, 27,453.40 and 13,105.40

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Solution

The fourth proportional to 18,315.32, 27,453.40 and 13,105.40 is: 19,644.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.32 : 27,453.40 = 13,105.40 : x
  2. Step 2: Convert to fraction form
    18,315.32/27,453.40 = 13,105.40/x
  3. Step 3: Cross multiply
    18,315.32x = 27,453.40 × 13,105.40
  4. Step 4: Simplify right side
    18,315.32x = 359,787,788.36
  5. Step 5: Solve for x
    x = 359,787,788.36/18,315.32
  6. Step 6: Final answer
    x = 19,644.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.