Home / 20,145.96-27,804.87-12,973.86

Finding the Fourth Proportional to 20,145.96, 27,804.87 and 12,973.86

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Solution

The fourth proportional to 20,145.96, 27,804.87 and 12,973.86 is: 17,906.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.96 : 27,804.87 = 12,973.86 : x
  2. Step 2: Convert to fraction form
    20,145.96/27,804.87 = 12,973.86/x
  3. Step 3: Cross multiply
    20,145.96x = 27,804.87 × 12,973.86
  4. Step 4: Simplify right side
    20,145.96x = 360,736,490.70
  5. Step 5: Solve for x
    x = 360,736,490.70/20,145.96
  6. Step 6: Final answer
    x = 17,906.15

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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.