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Finding the Fourth Proportional to 18,075.15, 27,009.11 and 13,777.09

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Solution

The fourth proportional to 18,075.15, 27,009.11 and 13,777.09 is: 20,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,075.15 : 27,009.11 = 13,777.09 : x
  2. Step 2: Convert to fraction form
    18,075.15/27,009.11 = 13,777.09/x
  3. Step 3: Cross multiply
    18,075.15x = 27,009.11 × 13,777.09
  4. Step 4: Simplify right side
    18,075.15x = 372,106,804.24
  5. Step 5: Solve for x
    x = 372,106,804.24/18,075.15
  6. Step 6: Final answer
    x = 20,586.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.