Home / 28,221.12-42,328.44-7,446.24

Finding the Fourth Proportional to 28,221.12, 42,328.44 and 7,446.24

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Solution

The fourth proportional to 28,221.12, 42,328.44 and 7,446.24 is: 11,168.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.12 : 42,328.44 = 7,446.24 : x
  2. Step 2: Convert to fraction form
    28,221.12/42,328.44 = 7,446.24/x
  3. Step 3: Cross multiply
    28,221.12x = 42,328.44 × 7,446.24
  4. Step 4: Simplify right side
    28,221.12x = 315,187,723.07
  5. Step 5: Solve for x
    x = 315,187,723.07/28,221.12
  6. Step 6: Final answer
    x = 11,168.51

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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.