Home / 13,628.92-20,439.02-4,392.76

Finding the Fourth Proportional to 13,628.92, 20,439.02 and 4,392.76

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Solution

The fourth proportional to 13,628.92, 20,439.02 and 4,392.76 is: 6,587.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.92 : 20,439.02 = 4,392.76 : x
  2. Step 2: Convert to fraction form
    13,628.92/20,439.02 = 4,392.76/x
  3. Step 3: Cross multiply
    13,628.92x = 20,439.02 × 4,392.76
  4. Step 4: Simplify right side
    13,628.92x = 89,783,709.50
  5. Step 5: Solve for x
    x = 89,783,709.50/13,628.92
  6. Step 6: Final answer
    x = 6,587.73

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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.