Home / 13,626.12-20,421.90-13,479.24

Finding the Fourth Proportional to 13,626.12, 20,421.90 and 13,479.24

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Solution

The fourth proportional to 13,626.12, 20,421.90 and 13,479.24 is: 20,201.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.12 : 20,421.90 = 13,479.24 : x
  2. Step 2: Convert to fraction form
    13,626.12/20,421.90 = 13,479.24/x
  3. Step 3: Cross multiply
    13,626.12x = 20,421.90 × 13,479.24
  4. Step 4: Simplify right side
    13,626.12x = 275,271,691.36
  5. Step 5: Solve for x
    x = 275,271,691.36/13,626.12
  6. Step 6: Final answer
    x = 20,201.77

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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.