Home / 28,112.64-42,168.96-12,333.12

Finding the Fourth Proportional to 28,112.64, 42,168.96 and 12,333.12

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Solution

The fourth proportional to 28,112.64, 42,168.96 and 12,333.12 is: 18,499.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.64 : 42,168.96 = 12,333.12 : x
  2. Step 2: Convert to fraction form
    28,112.64/42,168.96 = 12,333.12/x
  3. Step 3: Cross multiply
    28,112.64x = 42,168.96 × 12,333.12
  4. Step 4: Simplify right side
    28,112.64x = 520,074,843.96
  5. Step 5: Solve for x
    x = 520,074,843.96/28,112.64
  6. Step 6: Final answer
    x = 18,499.68

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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.