Home / 13,726.50-20,530.40-8,090.79

Finding the Fourth Proportional to 13,726.50, 20,530.40 and 8,090.79

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Solution

The fourth proportional to 13,726.50, 20,530.40 and 8,090.79 is: 12,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,726.50 : 20,530.40 = 8,090.79 : x
  2. Step 2: Convert to fraction form
    13,726.50/20,530.40 = 8,090.79/x
  3. Step 3: Cross multiply
    13,726.50x = 20,530.40 × 8,090.79
  4. Step 4: Simplify right side
    13,726.50x = 166,107,037.57
  5. Step 5: Solve for x
    x = 166,107,037.57/13,726.50
  6. Step 6: Final answer
    x = 12,101.20

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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.