Home / 13,238.76-19,822.62-6,985.80

Finding the Fourth Proportional to 13,238.76, 19,822.62 and 6,985.80

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Solution

The fourth proportional to 13,238.76, 19,822.62 and 6,985.80 is: 10,459.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.76 : 19,822.62 = 6,985.80 : x
  2. Step 2: Convert to fraction form
    13,238.76/19,822.62 = 6,985.80/x
  3. Step 3: Cross multiply
    13,238.76x = 19,822.62 × 6,985.80
  4. Step 4: Simplify right side
    13,238.76x = 138,476,858.80
  5. Step 5: Solve for x
    x = 138,476,858.80/13,238.76
  6. Step 6: Final answer
    x = 10,459.96

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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.