Home / 14,103.78-21,134.88-7,855.19

Finding the Fourth Proportional to 14,103.78, 21,134.88 and 7,855.19

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Solution

The fourth proportional to 14,103.78, 21,134.88 and 7,855.19 is: 11,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,103.78 : 21,134.88 = 7,855.19 : x
  2. Step 2: Convert to fraction form
    14,103.78/21,134.88 = 7,855.19/x
  3. Step 3: Cross multiply
    14,103.78x = 21,134.88 × 7,855.19
  4. Step 4: Simplify right side
    14,103.78x = 166,018,498.03
  5. Step 5: Solve for x
    x = 166,018,498.03/14,103.78
  6. Step 6: Final answer
    x = 11,771.21

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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.