Home / 28,722.09-39,636.12-16,146.84

Finding the Fourth Proportional to 28,722.09, 39,636.12 and 16,146.84

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Solution

The fourth proportional to 28,722.09, 39,636.12 and 16,146.84 is: 22,282.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.09 : 39,636.12 = 16,146.84 : x
  2. Step 2: Convert to fraction form
    28,722.09/39,636.12 = 16,146.84/x
  3. Step 3: Cross multiply
    28,722.09x = 39,636.12 × 16,146.84
  4. Step 4: Simplify right side
    28,722.09x = 639,998,087.86
  5. Step 5: Solve for x
    x = 639,998,087.86/28,722.09
  6. Step 6: Final answer
    x = 22,282.43

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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.