Home / 19,879.83-27,435.51-13,153.86

Finding the Fourth Proportional to 19,879.83, 27,435.51 and 13,153.86

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Solution

The fourth proportional to 19,879.83, 27,435.51 and 13,153.86 is: 18,153.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.83 : 27,435.51 = 13,153.86 : x
  2. Step 2: Convert to fraction form
    19,879.83/27,435.51 = 13,153.86/x
  3. Step 3: Cross multiply
    19,879.83x = 27,435.51 × 13,153.86
  4. Step 4: Simplify right side
    19,879.83x = 360,882,857.57
  5. Step 5: Solve for x
    x = 360,882,857.57/19,879.83
  6. Step 6: Final answer
    x = 18,153.22

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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.