Home / 18,966.12-28,450.70-5,114.92

Finding the Fourth Proportional to 18,966.12, 28,450.70 and 5,114.92

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Solution

The fourth proportional to 18,966.12, 28,450.70 and 5,114.92 is: 7,672.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966.12 : 28,450.70 = 5,114.92 : x
  2. Step 2: Convert to fraction form
    18,966.12/28,450.70 = 5,114.92/x
  3. Step 3: Cross multiply
    18,966.12x = 28,450.70 × 5,114.92
  4. Step 4: Simplify right side
    18,966.12x = 145,523,054.44
  5. Step 5: Solve for x
    x = 145,523,054.44/18,966.12
  6. Step 6: Final answer
    x = 7,672.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.