Home / 13,427.46-20,149.35-8,490.27

Finding the Fourth Proportional to 13,427.46, 20,149.35 and 8,490.27

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Solution

The fourth proportional to 13,427.46, 20,149.35 and 8,490.27 is: 12,740.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.46 : 20,149.35 = 8,490.27 : x
  2. Step 2: Convert to fraction form
    13,427.46/20,149.35 = 8,490.27/x
  3. Step 3: Cross multiply
    13,427.46x = 20,149.35 × 8,490.27
  4. Step 4: Simplify right side
    13,427.46x = 171,073,421.82
  5. Step 5: Solve for x
    x = 171,073,421.82/13,427.46
  6. Step 6: Final answer
    x = 12,740.56

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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.