Home / 19,879.80-27,435.54-13,153.68

Finding the Fourth Proportional to 19,879.80, 27,435.54 and 13,153.68

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Solution

The fourth proportional to 19,879.80, 27,435.54 and 13,153.68 is: 18,153.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.80 : 27,435.54 = 13,153.68 : x
  2. Step 2: Convert to fraction form
    19,879.80/27,435.54 = 13,153.68/x
  3. Step 3: Cross multiply
    19,879.80x = 27,435.54 × 13,153.68
  4. Step 4: Simplify right side
    19,879.80x = 360,878,313.79
  5. Step 5: Solve for x
    x = 360,878,313.79/19,879.80
  6. Step 6: Final answer
    x = 18,153.02

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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.