Home / 19,658.05-27,130.35-11,700.30

Finding the Fourth Proportional to 19,658.05, 27,130.35 and 11,700.30

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Solution

The fourth proportional to 19,658.05, 27,130.35 and 11,700.30 is: 16,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.05 : 27,130.35 = 11,700.30 : x
  2. Step 2: Convert to fraction form
    19,658.05/27,130.35 = 11,700.30/x
  3. Step 3: Cross multiply
    19,658.05x = 27,130.35 × 11,700.30
  4. Step 4: Simplify right side
    19,658.05x = 317,433,234.11
  5. Step 5: Solve for x
    x = 317,433,234.11/19,658.05
  6. Step 6: Final answer
    x = 16,147.75

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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.