Home / 20,879.75-31,346.34-17,937.02

Finding the Fourth Proportional to 20,879.75, 31,346.34 and 17,937.02

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Solution

The fourth proportional to 20,879.75, 31,346.34 and 17,937.02 is: 26,928.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879.75 : 31,346.34 = 17,937.02 : x
  2. Step 2: Convert to fraction form
    20,879.75/31,346.34 = 17,937.02/x
  3. Step 3: Cross multiply
    20,879.75x = 31,346.34 × 17,937.02
  4. Step 4: Simplify right side
    20,879.75x = 562,259,927.51
  5. Step 5: Solve for x
    x = 562,259,927.51/20,879.75
  6. Step 6: Final answer
    x = 26,928.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.