Home / 20,406.72-30,618.84-11,053.32

Finding the Fourth Proportional to 20,406.72, 30,618.84 and 11,053.32

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Solution

The fourth proportional to 20,406.72, 30,618.84 and 11,053.32 is: 16,584.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.72 : 30,618.84 = 11,053.32 : x
  2. Step 2: Convert to fraction form
    20,406.72/30,618.84 = 11,053.32/x
  3. Step 3: Cross multiply
    20,406.72x = 30,618.84 × 11,053.32
  4. Step 4: Simplify right side
    20,406.72x = 338,439,836.55
  5. Step 5: Solve for x
    x = 338,439,836.55/20,406.72
  6. Step 6: Final answer
    x = 16,584.72

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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.