Home / 13,415.72-20,130.39-10,148.88

Finding the Fourth Proportional to 13,415.72, 20,130.39 and 10,148.88

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Solution

The fourth proportional to 13,415.72, 20,130.39 and 10,148.88 is: 15,228.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.72 : 20,130.39 = 10,148.88 : x
  2. Step 2: Convert to fraction form
    13,415.72/20,130.39 = 10,148.88/x
  3. Step 3: Cross multiply
    13,415.72x = 20,130.39 × 10,148.88
  4. Step 4: Simplify right side
    13,415.72x = 204,300,912.46
  5. Step 5: Solve for x
    x = 204,300,912.46/13,415.72
  6. Step 6: Final answer
    x = 15,228.48

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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.