Home / 15,150.90-20,912.13-13,576.26

Finding the Fourth Proportional to 15,150.90, 20,912.13 and 13,576.26

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Solution

The fourth proportional to 15,150.90, 20,912.13 and 13,576.26 is: 18,738.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.90 : 20,912.13 = 13,576.26 : x
  2. Step 2: Convert to fraction form
    15,150.90/20,912.13 = 13,576.26/x
  3. Step 3: Cross multiply
    15,150.90x = 20,912.13 × 13,576.26
  4. Step 4: Simplify right side
    15,150.90x = 283,908,514.03
  5. Step 5: Solve for x
    x = 283,908,514.03/15,150.90
  6. Step 6: Final answer
    x = 18,738.72

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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.