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Finding the Fourth Proportional to 12,477.58, 18,729.84 and 11,099.74

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Solution

The fourth proportional to 12,477.58, 18,729.84 and 11,099.74 is: 16,661.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.58 : 18,729.84 = 11,099.74 : x
  2. Step 2: Convert to fraction form
    12,477.58/18,729.84 = 11,099.74/x
  3. Step 3: Cross multiply
    12,477.58x = 18,729.84 × 11,099.74
  4. Step 4: Simplify right side
    12,477.58x = 207,896,354.24
  5. Step 5: Solve for x
    x = 207,896,354.24/12,477.58
  6. Step 6: Final answer
    x = 16,661.59

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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.