Home / 21,267.03-31,899.80-11,425.53

Finding the Fourth Proportional to 21,267.03, 31,899.80 and 11,425.53

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Solution

The fourth proportional to 21,267.03, 31,899.80 and 11,425.53 is: 17,137.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.03 : 31,899.80 = 11,425.53 : x
  2. Step 2: Convert to fraction form
    21,267.03/31,899.80 = 11,425.53/x
  3. Step 3: Cross multiply
    21,267.03x = 31,899.80 × 11,425.53
  4. Step 4: Simplify right side
    21,267.03x = 364,471,905.27
  5. Step 5: Solve for x
    x = 364,471,905.27/21,267.03
  6. Step 6: Final answer
    x = 17,137.89

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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.