Home / 28,121.87-38,817.95-16,189.96

Finding the Fourth Proportional to 28,121.87, 38,817.95 and 16,189.96

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Solution

The fourth proportional to 28,121.87, 38,817.95 and 16,189.96 is: 22,347.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.87 : 38,817.95 = 16,189.96 : x
  2. Step 2: Convert to fraction form
    28,121.87/38,817.95 = 16,189.96/x
  3. Step 3: Cross multiply
    28,121.87x = 38,817.95 × 16,189.96
  4. Step 4: Simplify right side
    28,121.87x = 628,461,013.28
  5. Step 5: Solve for x
    x = 628,461,013.28/28,121.87
  6. Step 6: Final answer
    x = 22,347.77

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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.