Home / 13,628.32-20,423.56-6,214.68

Finding the Fourth Proportional to 13,628.32, 20,423.56 and 6,214.68

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Solution

The fourth proportional to 13,628.32, 20,423.56 and 6,214.68 is: 9,313.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.32 : 20,423.56 = 6,214.68 : x
  2. Step 2: Convert to fraction form
    13,628.32/20,423.56 = 6,214.68/x
  3. Step 3: Cross multiply
    13,628.32x = 20,423.56 × 6,214.68
  4. Step 4: Simplify right side
    13,628.32x = 126,925,889.86
  5. Step 5: Solve for x
    x = 126,925,889.86/13,628.32
  6. Step 6: Final answer
    x = 9,313.39

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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.