Home / 28,339.68-39,106.34-16,403.76

Finding the Fourth Proportional to 28,339.68, 39,106.34 and 16,403.76

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Solution

The fourth proportional to 28,339.68, 39,106.34 and 16,403.76 is: 22,635.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.68 : 39,106.34 = 16,403.76 : x
  2. Step 2: Convert to fraction form
    28,339.68/39,106.34 = 16,403.76/x
  3. Step 3: Cross multiply
    28,339.68x = 39,106.34 × 16,403.76
  4. Step 4: Simplify right side
    28,339.68x = 641,491,015.84
  5. Step 5: Solve for x
    x = 641,491,015.84/28,339.68
  6. Step 6: Final answer
    x = 22,635.79

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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.