Home / 13,724.88-20,588.40-5,404.32

Finding the Fourth Proportional to 13,724.88, 20,588.40 and 5,404.32

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Solution

The fourth proportional to 13,724.88, 20,588.40 and 5,404.32 is: 8,106.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.88 : 20,588.40 = 5,404.32 : x
  2. Step 2: Convert to fraction form
    13,724.88/20,588.40 = 5,404.32/x
  3. Step 3: Cross multiply
    13,724.88x = 20,588.40 × 5,404.32
  4. Step 4: Simplify right side
    13,724.88x = 111,266,301.89
  5. Step 5: Solve for x
    x = 111,266,301.89/13,724.88
  6. Step 6: Final answer
    x = 8,106.91

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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.