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Finding the Fourth Proportional to 14,477.67, 19,980.14 and 8,104.86

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Solution

The fourth proportional to 14,477.67, 19,980.14 and 8,104.86 is: 11,185.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,477.67 : 19,980.14 = 8,104.86 : x
  2. Step 2: Convert to fraction form
    14,477.67/19,980.14 = 8,104.86/x
  3. Step 3: Cross multiply
    14,477.67x = 19,980.14 × 8,104.86
  4. Step 4: Simplify right side
    14,477.67x = 161,936,196.96
  5. Step 5: Solve for x
    x = 161,936,196.96/14,477.67
  6. Step 6: Final answer
    x = 11,185.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.