Home / 18,626.63-25,704.88-10,128.85

Finding the Fourth Proportional to 18,626.63, 25,704.88 and 10,128.85

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Solution

The fourth proportional to 18,626.63, 25,704.88 and 10,128.85 is: 13,977.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.63 : 25,704.88 = 10,128.85 : x
  2. Step 2: Convert to fraction form
    18,626.63/25,704.88 = 10,128.85/x
  3. Step 3: Cross multiply
    18,626.63x = 25,704.88 × 10,128.85
  4. Step 4: Simplify right side
    18,626.63x = 260,360,784.20
  5. Step 5: Solve for x
    x = 260,360,784.20/18,626.63
  6. Step 6: Final answer
    x = 13,977.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.