Home / 12,813.78-19,225.80-6,238.20

Finding the Fourth Proportional to 12,813.78, 19,225.80 and 6,238.20

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Solution

The fourth proportional to 12,813.78, 19,225.80 and 6,238.20 is: 9,359.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.78 : 19,225.80 = 6,238.20 : x
  2. Step 2: Convert to fraction form
    12,813.78/19,225.80 = 6,238.20/x
  3. Step 3: Cross multiply
    12,813.78x = 19,225.80 × 6,238.20
  4. Step 4: Simplify right side
    12,813.78x = 119,934,385.56
  5. Step 5: Solve for x
    x = 119,934,385.56/12,813.78
  6. Step 6: Final answer
    x = 9,359.80

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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.