Home / 28,839.20-43,256.64-9,118.40

Finding the Fourth Proportional to 28,839.20, 43,256.64 and 9,118.40

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Solution

The fourth proportional to 28,839.20, 43,256.64 and 9,118.40 is: 13,676.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,839.20 : 43,256.64 = 9,118.40 : x
  2. Step 2: Convert to fraction form
    28,839.20/43,256.64 = 9,118.40/x
  3. Step 3: Cross multiply
    28,839.20x = 43,256.64 × 9,118.40
  4. Step 4: Simplify right side
    28,839.20x = 394,431,346.18
  5. Step 5: Solve for x
    x = 394,431,346.18/28,839.20
  6. Step 6: Final answer
    x = 13,676.92

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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.