Home / 18,038.75-27,063.59-12,783.92

Finding the Fourth Proportional to 18,038.75, 27,063.59 and 12,783.92

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Solution

The fourth proportional to 18,038.75, 27,063.59 and 12,783.92 is: 19,179.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,038.75 : 27,063.59 = 12,783.92 : x
  2. Step 2: Convert to fraction form
    18,038.75/27,063.59 = 12,783.92/x
  3. Step 3: Cross multiply
    18,038.75x = 27,063.59 × 12,783.92
  4. Step 4: Simplify right side
    18,038.75x = 345,978,570.24
  5. Step 5: Solve for x
    x = 345,978,570.24/18,038.75
  6. Step 6: Final answer
    x = 19,179.75

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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.