Home / 18,883.60-28,318.84-9,520

Finding the Fourth Proportional to 18,883.60, 28,318.84 and 9,520

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Solution

The fourth proportional to 18,883.60, 28,318.84 and 9,520 is: 14,276.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.60 : 28,318.84 = 9,520 : x
  2. Step 2: Convert to fraction form
    18,883.60/28,318.84 = 9,520/x
  3. Step 3: Cross multiply
    18,883.60x = 28,318.84 × 9,520
  4. Step 4: Simplify right side
    18,883.60x = 269,595,356.80
  5. Step 5: Solve for x
    x = 269,595,356.80/18,883.60
  6. Step 6: Final answer
    x = 14,276.69

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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.