Home / 12,927.65-19,388.43-8,240.78

Finding the Fourth Proportional to 12,927.65, 19,388.43 and 8,240.78

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Solution

The fourth proportional to 12,927.65, 19,388.43 and 8,240.78 is: 12,359.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.65 : 19,388.43 = 8,240.78 : x
  2. Step 2: Convert to fraction form
    12,927.65/19,388.43 = 8,240.78/x
  3. Step 3: Cross multiply
    12,927.65x = 19,388.43 × 8,240.78
  4. Step 4: Simplify right side
    12,927.65x = 159,775,834.65
  5. Step 5: Solve for x
    x = 159,775,834.65/12,927.65
  6. Step 6: Final answer
    x = 12,359.24

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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.