Home / 12,561.92-18,836.80-4,240.32

Finding the Fourth Proportional to 12,561.92, 18,836.80 and 4,240.32

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Solution

The fourth proportional to 12,561.92, 18,836.80 and 4,240.32 is: 6,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.92 : 18,836.80 = 4,240.32 : x
  2. Step 2: Convert to fraction form
    12,561.92/18,836.80 = 4,240.32/x
  3. Step 3: Cross multiply
    12,561.92x = 18,836.80 × 4,240.32
  4. Step 4: Simplify right side
    12,561.92x = 79,874,059.78
  5. Step 5: Solve for x
    x = 79,874,059.78/12,561.92
  6. Step 6: Final answer
    x = 6,358.43

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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.