Home / 28,218.84-38,942.15-16,282.68

Finding the Fourth Proportional to 28,218.84, 38,942.15 and 16,282.68

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Solution

The fourth proportional to 28,218.84, 38,942.15 and 16,282.68 is: 22,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.84 : 38,942.15 = 16,282.68 : x
  2. Step 2: Convert to fraction form
    28,218.84/38,942.15 = 16,282.68/x
  3. Step 3: Cross multiply
    28,218.84x = 38,942.15 × 16,282.68
  4. Step 4: Simplify right side
    28,218.84x = 634,082,485.55
  5. Step 5: Solve for x
    x = 634,082,485.55/28,218.84
  6. Step 6: Final answer
    x = 22,470.18

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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.