Home / 20,867.96-31,288.77-11,514.51

Finding the Fourth Proportional to 20,867.96, 31,288.77 and 11,514.51

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Solution

The fourth proportional to 20,867.96, 31,288.77 and 11,514.51 is: 17,264.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.96 : 31,288.77 = 11,514.51 : x
  2. Step 2: Convert to fraction form
    20,867.96/31,288.77 = 11,514.51/x
  3. Step 3: Cross multiply
    20,867.96x = 31,288.77 × 11,514.51
  4. Step 4: Simplify right side
    20,867.96x = 360,274,855.05
  5. Step 5: Solve for x
    x = 360,274,855.05/20,867.96
  6. Step 6: Final answer
    x = 17,264.50

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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.