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Finding the Fourth Proportional to 26,403, 39,555.06 and 13,239.96

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Solution

The fourth proportional to 26,403, 39,555.06 and 13,239.96 is: 19,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,403 : 39,555.06 = 13,239.96 : x
  2. Step 2: Convert to fraction form
    26,403/39,555.06 = 13,239.96/x
  3. Step 3: Cross multiply
    26,403x = 39,555.06 × 13,239.96
  4. Step 4: Simplify right side
    26,403x = 523,707,412.20
  5. Step 5: Solve for x
    x = 523,707,412.20/26,403
  6. Step 6: Final answer
    x = 19,835.15

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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.