Home / 20,048.49-27,663.48-12,879.99

Finding the Fourth Proportional to 20,048.49, 27,663.48 and 12,879.99

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Solution

The fourth proportional to 20,048.49, 27,663.48 and 12,879.99 is: 17,772.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,048.49 : 27,663.48 = 12,879.99 : x
  2. Step 2: Convert to fraction form
    20,048.49/27,663.48 = 12,879.99/x
  3. Step 3: Cross multiply
    20,048.49x = 27,663.48 × 12,879.99
  4. Step 4: Simplify right side
    20,048.49x = 356,305,345.77
  5. Step 5: Solve for x
    x = 356,305,345.77/20,048.49
  6. Step 6: Final answer
    x = 17,772.18

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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.