Home / 20,840.76-31,194.01-13,730.87

Finding the Fourth Proportional to 20,840.76, 31,194.01 and 13,730.87

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Solution

The fourth proportional to 20,840.76, 31,194.01 and 13,730.87 is: 20,552.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.76 : 31,194.01 = 13,730.87 : x
  2. Step 2: Convert to fraction form
    20,840.76/31,194.01 = 13,730.87/x
  3. Step 3: Cross multiply
    20,840.76x = 31,194.01 × 13,730.87
  4. Step 4: Simplify right side
    20,840.76x = 428,320,896.09
  5. Step 5: Solve for x
    x = 428,320,896.09/20,840.76
  6. Step 6: Final answer
    x = 20,552.08

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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.