Home / 20,970.15-28,936.64-11,893.67

Finding the Fourth Proportional to 20,970.15, 28,936.64 and 11,893.67

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Solution

The fourth proportional to 20,970.15, 28,936.64 and 11,893.67 is: 16,412.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.15 : 28,936.64 = 11,893.67 : x
  2. Step 2: Convert to fraction form
    20,970.15/28,936.64 = 11,893.67/x
  3. Step 3: Cross multiply
    20,970.15x = 28,936.64 × 11,893.67
  4. Step 4: Simplify right side
    20,970.15x = 344,162,642.92
  5. Step 5: Solve for x
    x = 344,162,642.92/20,970.15
  6. Step 6: Final answer
    x = 16,412.03

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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.