Home / 13,979.42-20,962.98-7,404.07

Finding the Fourth Proportional to 13,979.42, 20,962.98 and 7,404.07

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Solution

The fourth proportional to 13,979.42, 20,962.98 and 7,404.07 is: 11,102.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.42 : 20,962.98 = 7,404.07 : x
  2. Step 2: Convert to fraction form
    13,979.42/20,962.98 = 7,404.07/x
  3. Step 3: Cross multiply
    13,979.42x = 20,962.98 × 7,404.07
  4. Step 4: Simplify right side
    13,979.42x = 155,211,371.33
  5. Step 5: Solve for x
    x = 155,211,371.33/13,979.42
  6. Step 6: Final answer
    x = 11,102.85

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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.