Home / 19,658.55-27,131.04-11,700.80

Finding the Fourth Proportional to 19,658.55, 27,131.04 and 11,700.80

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Solution

The fourth proportional to 19,658.55, 27,131.04 and 11,700.80 is: 16,148.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.55 : 27,131.04 = 11,700.80 : x
  2. Step 2: Convert to fraction form
    19,658.55/27,131.04 = 11,700.80/x
  3. Step 3: Cross multiply
    19,658.55x = 27,131.04 × 11,700.80
  4. Step 4: Simplify right side
    19,658.55x = 317,454,872.83
  5. Step 5: Solve for x
    x = 317,454,872.83/19,658.55
  6. Step 6: Final answer
    x = 16,148.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.