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Finding the Fourth Proportional to 16,281.81, 24,378.81 and 10,645.50

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Solution

The fourth proportional to 16,281.81, 24,378.81 and 10,645.50 is: 15,939.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,281.81 : 24,378.81 = 10,645.50 : x
  2. Step 2: Convert to fraction form
    16,281.81/24,378.81 = 10,645.50/x
  3. Step 3: Cross multiply
    16,281.81x = 24,378.81 × 10,645.50
  4. Step 4: Simplify right side
    16,281.81x = 259,524,673.35
  5. Step 5: Solve for x
    x = 259,524,673.35/16,281.81
  6. Step 6: Final answer
    x = 15,939.54

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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.