Home / 19,879.77-27,435.65-11,384.56

Finding the Fourth Proportional to 19,879.77, 27,435.65 and 11,384.56

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Solution

The fourth proportional to 19,879.77, 27,435.65 and 11,384.56 is: 15,711.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.77 : 27,435.65 = 11,384.56 : x
  2. Step 2: Convert to fraction form
    19,879.77/27,435.65 = 11,384.56/x
  3. Step 3: Cross multiply
    19,879.77x = 27,435.65 × 11,384.56
  4. Step 4: Simplify right side
    19,879.77x = 312,342,803.56
  5. Step 5: Solve for x
    x = 312,342,803.56/19,879.77
  6. Step 6: Final answer
    x = 15,711.59

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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.