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Finding the Fourth Proportional to 14,161.80, 21,211.80 and 12,924.12

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Solution

The fourth proportional to 14,161.80, 21,211.80 and 12,924.12 is: 19,357.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,161.80 : 21,211.80 = 12,924.12 : x
  2. Step 2: Convert to fraction form
    14,161.80/21,211.80 = 12,924.12/x
  3. Step 3: Cross multiply
    14,161.80x = 21,211.80 × 12,924.12
  4. Step 4: Simplify right side
    14,161.80x = 274,143,848.62
  5. Step 5: Solve for x
    x = 274,143,848.62/14,161.80
  6. Step 6: Final answer
    x = 19,357.98

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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.