Home / 12,730.39-19,095.55-7,181.21

Finding the Fourth Proportional to 12,730.39, 19,095.55 and 7,181.21

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Solution

The fourth proportional to 12,730.39, 19,095.55 and 7,181.21 is: 10,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.39 : 19,095.55 = 7,181.21 : x
  2. Step 2: Convert to fraction form
    12,730.39/19,095.55 = 7,181.21/x
  3. Step 3: Cross multiply
    12,730.39x = 19,095.55 × 7,181.21
  4. Step 4: Simplify right side
    12,730.39x = 137,129,154.62
  5. Step 5: Solve for x
    x = 137,129,154.62/12,730.39
  6. Step 6: Final answer
    x = 10,771.80

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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.