Home / 12,992.08-19,488.62-7,442.90

Finding the Fourth Proportional to 12,992.08, 19,488.62 and 7,442.90

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Solution

The fourth proportional to 12,992.08, 19,488.62 and 7,442.90 is: 11,164.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,992.08 : 19,488.62 = 7,442.90 : x
  2. Step 2: Convert to fraction form
    12,992.08/19,488.62 = 7,442.90/x
  3. Step 3: Cross multiply
    12,992.08x = 19,488.62 × 7,442.90
  4. Step 4: Simplify right side
    12,992.08x = 145,051,849.80
  5. Step 5: Solve for x
    x = 145,051,849.80/12,992.08
  6. Step 6: Final answer
    x = 11,164.64

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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.