Home / 13,725.40-20,588.10-9,108.40

Finding the Fourth Proportional to 13,725.40, 20,588.10 and 9,108.40

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Solution

The fourth proportional to 13,725.40, 20,588.10 and 9,108.40 is: 13,662.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.40 : 20,588.10 = 9,108.40 : x
  2. Step 2: Convert to fraction form
    13,725.40/20,588.10 = 9,108.40/x
  3. Step 3: Cross multiply
    13,725.40x = 20,588.10 × 9,108.40
  4. Step 4: Simplify right side
    13,725.40x = 187,524,650.04
  5. Step 5: Solve for x
    x = 187,524,650.04/13,725.40
  6. Step 6: Final answer
    x = 13,662.60

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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.