Home / 28,212.12-38,950.44-18,158.04

Finding the Fourth Proportional to 28,212.12, 38,950.44 and 18,158.04

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Solution

The fourth proportional to 28,212.12, 38,950.44 and 18,158.04 is: 25,069.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.12 : 38,950.44 = 18,158.04 : x
  2. Step 2: Convert to fraction form
    28,212.12/38,950.44 = 18,158.04/x
  3. Step 3: Cross multiply
    28,212.12x = 38,950.44 × 18,158.04
  4. Step 4: Simplify right side
    28,212.12x = 707,263,647.54
  5. Step 5: Solve for x
    x = 707,263,647.54/28,212.12
  6. Step 6: Final answer
    x = 25,069.50

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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.