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Finding the Fourth Proportional to 14,000.98, 21,000.79 and 5,235.21

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Solution

The fourth proportional to 14,000.98, 21,000.79 and 5,235.21 is: 7,852.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,000.98 : 21,000.79 = 5,235.21 : x
  2. Step 2: Convert to fraction form
    14,000.98/21,000.79 = 5,235.21/x
  3. Step 3: Cross multiply
    14,000.98x = 21,000.79 × 5,235.21
  4. Step 4: Simplify right side
    14,000.98x = 109,943,532.73
  5. Step 5: Solve for x
    x = 109,943,532.73/14,000.98
  6. Step 6: Final answer
    x = 7,852.56

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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.