Home / 11,855.18-17,782.79-11,133.47

Finding the Fourth Proportional to 11,855.18, 17,782.79 and 11,133.47

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Solution

The fourth proportional to 11,855.18, 17,782.79 and 11,133.47 is: 16,700.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,855.18 : 17,782.79 = 11,133.47 : x
  2. Step 2: Convert to fraction form
    11,855.18/17,782.79 = 11,133.47/x
  3. Step 3: Cross multiply
    11,855.18x = 17,782.79 × 11,133.47
  4. Step 4: Simplify right side
    11,855.18x = 197,984,147.77
  5. Step 5: Solve for x
    x = 197,984,147.77/11,855.18
  6. Step 6: Final answer
    x = 16,700.22

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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.