Home / 21,028.46-31,588.48-12,712.39

Finding the Fourth Proportional to 21,028.46, 31,588.48 and 12,712.39

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Solution

The fourth proportional to 21,028.46, 31,588.48 and 12,712.39 is: 19,096.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.46 : 31,588.48 = 12,712.39 : x
  2. Step 2: Convert to fraction form
    21,028.46/31,588.48 = 12,712.39/x
  3. Step 3: Cross multiply
    21,028.46x = 31,588.48 × 12,712.39
  4. Step 4: Simplify right side
    21,028.46x = 401,565,191.87
  5. Step 5: Solve for x
    x = 401,565,191.87/21,028.46
  6. Step 6: Final answer
    x = 19,096.27

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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.