Home / 15,046.91-20,804.37-13,178.56

Finding the Fourth Proportional to 15,046.91, 20,804.37 and 13,178.56

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Solution

The fourth proportional to 15,046.91, 20,804.37 and 13,178.56 is: 18,221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,046.91 : 20,804.37 = 13,178.56 : x
  2. Step 2: Convert to fraction form
    15,046.91/20,804.37 = 13,178.56/x
  3. Step 3: Cross multiply
    15,046.91x = 20,804.37 × 13,178.56
  4. Step 4: Simplify right side
    15,046.91x = 274,171,638.31
  5. Step 5: Solve for x
    x = 274,171,638.31/15,046.91
  6. Step 6: Final answer
    x = 18,221.13

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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.