Home / 21,286.00-29,374.67-12,338.69

Finding the Fourth Proportional to 21,286.00, 29,374.67 and 12,338.69

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Solution

The fourth proportional to 21,286.00, 29,374.67 and 12,338.69 is: 17,027.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.00 : 29,374.67 = 12,338.69 : x
  2. Step 2: Convert to fraction form
    21,286.00/29,374.67 = 12,338.69/x
  3. Step 3: Cross multiply
    21,286.00x = 29,374.67 × 12,338.69
  4. Step 4: Simplify right side
    21,286.00x = 362,445,051.27
  5. Step 5: Solve for x
    x = 362,445,051.27/21,286.00
  6. Step 6: Final answer
    x = 17,027.39

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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.