Home / 15,814.20-21,825.78-9,099.70

Finding the Fourth Proportional to 15,814.20, 21,825.78 and 9,099.70

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Solution

The fourth proportional to 15,814.20, 21,825.78 and 9,099.70 is: 12,558.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,814.20 : 21,825.78 = 9,099.70 : x
  2. Step 2: Convert to fraction form
    15,814.20/21,825.78 = 9,099.70/x
  3. Step 3: Cross multiply
    15,814.20x = 21,825.78 × 9,099.70
  4. Step 4: Simplify right side
    15,814.20x = 198,608,050.27
  5. Step 5: Solve for x
    x = 198,608,050.27/15,814.20
  6. Step 6: Final answer
    x = 12,558.84

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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.