Home / 13,103.56-19,655.34-10,790.20

Finding the Fourth Proportional to 13,103.56, 19,655.34 and 10,790.20

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Solution

The fourth proportional to 13,103.56, 19,655.34 and 10,790.20 is: 16,185.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.56 : 19,655.34 = 10,790.20 : x
  2. Step 2: Convert to fraction form
    13,103.56/19,655.34 = 10,790.20/x
  3. Step 3: Cross multiply
    13,103.56x = 19,655.34 × 10,790.20
  4. Step 4: Simplify right side
    13,103.56x = 212,085,049.67
  5. Step 5: Solve for x
    x = 212,085,049.67/13,103.56
  6. Step 6: Final answer
    x = 16,185.30

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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.