Home / 19,782.95-27,299.78-11,287.82

Finding the Fourth Proportional to 19,782.95, 27,299.78 and 11,287.82

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Solution

The fourth proportional to 19,782.95, 27,299.78 and 11,287.82 is: 15,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,782.95 : 27,299.78 = 11,287.82 : x
  2. Step 2: Convert to fraction form
    19,782.95/27,299.78 = 11,287.82/x
  3. Step 3: Cross multiply
    19,782.95x = 27,299.78 × 11,287.82
  4. Step 4: Simplify right side
    19,782.95x = 308,155,002.68
  5. Step 5: Solve for x
    x = 308,155,002.68/19,782.95
  6. Step 6: Final answer
    x = 15,576.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.