Home / 13,423.16-20,138.34-5,629.88

Finding the Fourth Proportional to 13,423.16, 20,138.34 and 5,629.88

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Solution

The fourth proportional to 13,423.16, 20,138.34 and 5,629.88 is: 8,446.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.16 : 20,138.34 = 5,629.88 : x
  2. Step 2: Convert to fraction form
    13,423.16/20,138.34 = 5,629.88/x
  3. Step 3: Cross multiply
    13,423.16x = 20,138.34 × 5,629.88
  4. Step 4: Simplify right side
    13,423.16x = 113,376,437.60
  5. Step 5: Solve for x
    x = 113,376,437.60/13,423.16
  6. Step 6: Final answer
    x = 8,446.33

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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.