Home / 28,221.09-42,327.32-7,446.21

Finding the Fourth Proportional to 28,221.09, 42,327.32 and 7,446.21

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Solution

The fourth proportional to 28,221.09, 42,327.32 and 7,446.21 is: 11,168.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.09 : 42,327.32 = 7,446.21 : x
  2. Step 2: Convert to fraction form
    28,221.09/42,327.32 = 7,446.21/x
  3. Step 3: Cross multiply
    28,221.09x = 42,327.32 × 7,446.21
  4. Step 4: Simplify right side
    28,221.09x = 315,178,076.23
  5. Step 5: Solve for x
    x = 315,178,076.23/28,221.09
  6. Step 6: Final answer
    x = 11,168.18

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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.