Home / 12,790.12-19,180.14-6,214.36

Finding the Fourth Proportional to 12,790.12, 19,180.14 and 6,214.36

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Solution

The fourth proportional to 12,790.12, 19,180.14 and 6,214.36 is: 9,319.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.12 : 19,180.14 = 6,214.36 : x
  2. Step 2: Convert to fraction form
    12,790.12/19,180.14 = 6,214.36/x
  3. Step 3: Cross multiply
    12,790.12x = 19,180.14 × 6,214.36
  4. Step 4: Simplify right side
    12,790.12x = 119,192,294.81
  5. Step 5: Solve for x
    x = 119,192,294.81/12,790.12
  6. Step 6: Final answer
    x = 9,319.09

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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.