Home / 12,505.32-18,757.80-3,145.32

Finding the Fourth Proportional to 12,505.32, 18,757.80 and 3,145.32

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Solution

The fourth proportional to 12,505.32, 18,757.80 and 3,145.32 is: 4,717.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.32 : 18,757.80 = 3,145.32 : x
  2. Step 2: Convert to fraction form
    12,505.32/18,757.80 = 3,145.32/x
  3. Step 3: Cross multiply
    12,505.32x = 18,757.80 × 3,145.32
  4. Step 4: Simplify right side
    12,505.32x = 58,999,283.50
  5. Step 5: Solve for x
    x = 58,999,283.50/12,505.32
  6. Step 6: Final answer
    x = 4,717.93

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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.