Home / 19,879.24-27,406.32-15,012.70

Finding the Fourth Proportional to 19,879.24, 27,406.32 and 15,012.70

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Solution

The fourth proportional to 19,879.24, 27,406.32 and 15,012.70 is: 20,697.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.24 : 27,406.32 = 15,012.70 : x
  2. Step 2: Convert to fraction form
    19,879.24/27,406.32 = 15,012.70/x
  3. Step 3: Cross multiply
    19,879.24x = 27,406.32 × 15,012.70
  4. Step 4: Simplify right side
    19,879.24x = 411,442,860.26
  5. Step 5: Solve for x
    x = 411,442,860.26/19,879.24
  6. Step 6: Final answer
    x = 20,697.11

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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.