Home / 28,719.43-39,626.95-16,780.46

Finding the Fourth Proportional to 28,719.43, 39,626.95 and 16,780.46

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Solution

The fourth proportional to 28,719.43, 39,626.95 and 16,780.46 is: 23,153.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.43 : 39,626.95 = 16,780.46 : x
  2. Step 2: Convert to fraction form
    28,719.43/39,626.95 = 16,780.46/x
  3. Step 3: Cross multiply
    28,719.43x = 39,626.95 × 16,780.46
  4. Step 4: Simplify right side
    28,719.43x = 664,958,449.40
  5. Step 5: Solve for x
    x = 664,958,449.40/28,719.43
  6. Step 6: Final answer
    x = 23,153.61

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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.