Home / 20,661.93-28,514.16-11,230.70

Finding the Fourth Proportional to 20,661.93, 28,514.16 and 11,230.70

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Solution

The fourth proportional to 20,661.93, 28,514.16 and 11,230.70 is: 15,498.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.93 : 28,514.16 = 11,230.70 : x
  2. Step 2: Convert to fraction form
    20,661.93/28,514.16 = 11,230.70/x
  3. Step 3: Cross multiply
    20,661.93x = 28,514.16 × 11,230.70
  4. Step 4: Simplify right side
    20,661.93x = 320,233,976.71
  5. Step 5: Solve for x
    x = 320,233,976.71/20,661.93
  6. Step 6: Final answer
    x = 15,498.74

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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.