Home / 18,121.65-27,178.26-4,975.08

Finding the Fourth Proportional to 18,121.65, 27,178.26 and 4,975.08

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Solution

The fourth proportional to 18,121.65, 27,178.26 and 4,975.08 is: 7,461.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.65 : 27,178.26 = 4,975.08 : x
  2. Step 2: Convert to fraction form
    18,121.65/27,178.26 = 4,975.08/x
  3. Step 3: Cross multiply
    18,121.65x = 27,178.26 × 4,975.08
  4. Step 4: Simplify right side
    18,121.65x = 135,214,017.76
  5. Step 5: Solve for x
    x = 135,214,017.76/18,121.65
  6. Step 6: Final answer
    x = 7,461.46

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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.