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Finding the Fourth Proportional to 12,474.72, 18,712.08 and 4,266.72

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Solution

The fourth proportional to 12,474.72, 18,712.08 and 4,266.72 is: 6,400.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.72 : 18,712.08 = 4,266.72 : x
  2. Step 2: Convert to fraction form
    12,474.72/18,712.08 = 4,266.72/x
  3. Step 3: Cross multiply
    12,474.72x = 18,712.08 × 4,266.72
  4. Step 4: Simplify right side
    12,474.72x = 79,839,205.98
  5. Step 5: Solve for x
    x = 79,839,205.98/12,474.72
  6. Step 6: Final answer
    x = 6,400.08

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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.