Home / 20,631.56-28,494.99-13,905.59

Finding the Fourth Proportional to 20,631.56, 28,494.99 and 13,905.59

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Solution

The fourth proportional to 20,631.56, 28,494.99 and 13,905.59 is: 19,205.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.56 : 28,494.99 = 13,905.59 : x
  2. Step 2: Convert to fraction form
    20,631.56/28,494.99 = 13,905.59/x
  3. Step 3: Cross multiply
    20,631.56x = 28,494.99 × 13,905.59
  4. Step 4: Simplify right side
    20,631.56x = 396,239,505.52
  5. Step 5: Solve for x
    x = 396,239,505.52/20,631.56
  6. Step 6: Final answer
    x = 19,205.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.