Home / 20,906.37-28,856.33-12,944.07

Finding the Fourth Proportional to 20,906.37, 28,856.33 and 12,944.07

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Solution

The fourth proportional to 20,906.37, 28,856.33 and 12,944.07 is: 17,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.37 : 28,856.33 = 12,944.07 : x
  2. Step 2: Convert to fraction form
    20,906.37/28,856.33 = 12,944.07/x
  3. Step 3: Cross multiply
    20,906.37x = 28,856.33 × 12,944.07
  4. Step 4: Simplify right side
    20,906.37x = 373,518,355.46
  5. Step 5: Solve for x
    x = 373,518,355.46/20,906.37
  6. Step 6: Final answer
    x = 17,866.25

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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.