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Finding the Fourth Proportional to 28,179.70, 38,881.62 and 16,847.32

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Solution

The fourth proportional to 28,179.70, 38,881.62 and 16,847.32 is: 23,245.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.70 : 38,881.62 = 16,847.32 : x
  2. Step 2: Convert to fraction form
    28,179.70/38,881.62 = 16,847.32/x
  3. Step 3: Cross multiply
    28,179.70x = 38,881.62 × 16,847.32
  4. Step 4: Simplify right side
    28,179.70x = 655,051,094.26
  5. Step 5: Solve for x
    x = 655,051,094.26/28,179.70
  6. Step 6: Final answer
    x = 23,245.50

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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.