Home / 18,013.88-27,030.33-12,782.69

Finding the Fourth Proportional to 18,013.88, 27,030.33 and 12,782.69

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Solution

The fourth proportional to 18,013.88, 27,030.33 and 12,782.69 is: 19,180.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,013.88 : 27,030.33 = 12,782.69 : x
  2. Step 2: Convert to fraction form
    18,013.88/27,030.33 = 12,782.69/x
  3. Step 3: Cross multiply
    18,013.88x = 27,030.33 × 12,782.69
  4. Step 4: Simplify right side
    18,013.88x = 345,520,328.99
  5. Step 5: Solve for x
    x = 345,520,328.99/18,013.88
  6. Step 6: Final answer
    x = 19,180.78

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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.