Home / 14,209.20-21,313.80-13,917.60

Finding the Fourth Proportional to 14,209.20, 21,313.80 and 13,917.60

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Solution

The fourth proportional to 14,209.20, 21,313.80 and 13,917.60 is: 20,876.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,209.20 : 21,313.80 = 13,917.60 : x
  2. Step 2: Convert to fraction form
    14,209.20/21,313.80 = 13,917.60/x
  3. Step 3: Cross multiply
    14,209.20x = 21,313.80 × 13,917.60
  4. Step 4: Simplify right side
    14,209.20x = 296,636,942.88
  5. Step 5: Solve for x
    x = 296,636,942.88/14,209.20
  6. Step 6: Final answer
    x = 20,876.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.