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Finding the Fourth Proportional to 12,503.76, 18,718.30 and 7,558.44

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Solution

The fourth proportional to 12,503.76, 18,718.30 and 7,558.44 is: 11,315.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.76 : 18,718.30 = 7,558.44 : x
  2. Step 2: Convert to fraction form
    12,503.76/18,718.30 = 7,558.44/x
  3. Step 3: Cross multiply
    12,503.76x = 18,718.30 × 7,558.44
  4. Step 4: Simplify right side
    12,503.76x = 141,481,147.45
  5. Step 5: Solve for x
    x = 141,481,147.45/12,503.76
  6. Step 6: Final answer
    x = 11,315.09

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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.