Home / 20,879.96-28,813.44-12,501.08

Finding the Fourth Proportional to 20,879.96, 28,813.44 and 12,501.08

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Solution

The fourth proportional to 20,879.96, 28,813.44 and 12,501.08 is: 17,250.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879.96 : 28,813.44 = 12,501.08 : x
  2. Step 2: Convert to fraction form
    20,879.96/28,813.44 = 12,501.08/x
  3. Step 3: Cross multiply
    20,879.96x = 28,813.44 × 12,501.08
  4. Step 4: Simplify right side
    20,879.96x = 360,199,118.52
  5. Step 5: Solve for x
    x = 360,199,118.52/20,879.96
  6. Step 6: Final answer
    x = 17,250.95

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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.