Home / 18,533.75-27,767.81-15,395.40

Finding the Fourth Proportional to 18,533.75, 27,767.81 and 15,395.40

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Solution

The fourth proportional to 18,533.75, 27,767.81 and 15,395.40 is: 23,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,533.75 : 27,767.81 = 15,395.40 : x
  2. Step 2: Convert to fraction form
    18,533.75/27,767.81 = 15,395.40/x
  3. Step 3: Cross multiply
    18,533.75x = 27,767.81 × 15,395.40
  4. Step 4: Simplify right side
    18,533.75x = 427,496,580.56
  5. Step 5: Solve for x
    x = 427,496,580.56/18,533.75
  6. Step 6: Final answer
    x = 23,065.85

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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.