Home / 13,186.20-19,777.20-4,421.16

Finding the Fourth Proportional to 13,186.20, 19,777.20 and 4,421.16

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Solution

The fourth proportional to 13,186.20, 19,777.20 and 4,421.16 is: 6,631.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.20 : 19,777.20 = 4,421.16 : x
  2. Step 2: Convert to fraction form
    13,186.20/19,777.20 = 4,421.16/x
  3. Step 3: Cross multiply
    13,186.20x = 19,777.20 × 4,421.16
  4. Step 4: Simplify right side
    13,186.20x = 87,438,165.55
  5. Step 5: Solve for x
    x = 87,438,165.55/13,186.20
  6. Step 6: Final answer
    x = 6,631.04

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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.