Home / 13,620.92-20,427.04-4,384.76

Finding the Fourth Proportional to 13,620.92, 20,427.04 and 4,384.76

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Solution

The fourth proportional to 13,620.92, 20,427.04 and 4,384.76 is: 6,575.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.92 : 20,427.04 = 4,384.76 : x
  2. Step 2: Convert to fraction form
    13,620.92/20,427.04 = 4,384.76/x
  3. Step 3: Cross multiply
    13,620.92x = 20,427.04 × 4,384.76
  4. Step 4: Simplify right side
    13,620.92x = 89,567,667.91
  5. Step 5: Solve for x
    x = 89,567,667.91/13,620.92
  6. Step 6: Final answer
    x = 6,575.74

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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.