Home / 18,731.07-28,075.41-7,623.81

Finding the Fourth Proportional to 18,731.07, 28,075.41 and 7,623.81

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Solution

The fourth proportional to 18,731.07, 28,075.41 and 7,623.81 is: 11,427.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.07 : 28,075.41 = 7,623.81 : x
  2. Step 2: Convert to fraction form
    18,731.07/28,075.41 = 7,623.81/x
  3. Step 3: Cross multiply
    18,731.07x = 28,075.41 × 7,623.81
  4. Step 4: Simplify right side
    18,731.07x = 214,041,591.51
  5. Step 5: Solve for x
    x = 214,041,591.51/18,731.07
  6. Step 6: Final answer
    x = 11,427.09

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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.