Home / 13,431.06-20,115.90-6,416.01

Finding the Fourth Proportional to 13,431.06, 20,115.90 and 6,416.01

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Solution

The fourth proportional to 13,431.06, 20,115.90 and 6,416.01 is: 9,609.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.06 : 20,115.90 = 6,416.01 : x
  2. Step 2: Convert to fraction form
    13,431.06/20,115.90 = 6,416.01/x
  3. Step 3: Cross multiply
    13,431.06x = 20,115.90 × 6,416.01
  4. Step 4: Simplify right side
    13,431.06x = 129,063,815.56
  5. Step 5: Solve for x
    x = 129,063,815.56/13,431.06
  6. Step 6: Final answer
    x = 9,609.35

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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.