Home / 18,501.21-27,763.97-13,555.76

Finding the Fourth Proportional to 18,501.21, 27,763.97 and 13,555.76

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Solution

The fourth proportional to 18,501.21, 27,763.97 and 13,555.76 is: 20,342.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,501.21 : 27,763.97 = 13,555.76 : x
  2. Step 2: Convert to fraction form
    18,501.21/27,763.97 = 13,555.76/x
  3. Step 3: Cross multiply
    18,501.21x = 27,763.97 × 13,555.76
  4. Step 4: Simplify right side
    18,501.21x = 376,361,507.37
  5. Step 5: Solve for x
    x = 376,361,507.37/18,501.21
  6. Step 6: Final answer
    x = 20,342.53

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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.