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Finding the Fourth Proportional to 12,647.59, 18,973.44 and 4,750.72

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Solution

The fourth proportional to 12,647.59, 18,973.44 and 4,750.72 is: 7,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.59 : 18,973.44 = 4,750.72 : x
  2. Step 2: Convert to fraction form
    12,647.59/18,973.44 = 4,750.72/x
  3. Step 3: Cross multiply
    12,647.59x = 18,973.44 × 4,750.72
  4. Step 4: Simplify right side
    12,647.59x = 90,137,524.59
  5. Step 5: Solve for x
    x = 90,137,524.59/12,647.59
  6. Step 6: Final answer
    x = 7,126.85

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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.