Home / 21,459.47-29,614.13-11,900.03

Finding the Fourth Proportional to 21,459.47, 29,614.13 and 11,900.03

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Solution

The fourth proportional to 21,459.47, 29,614.13 and 11,900.03 is: 16,422.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.47 : 29,614.13 = 11,900.03 : x
  2. Step 2: Convert to fraction form
    21,459.47/29,614.13 = 11,900.03/x
  3. Step 3: Cross multiply
    21,459.47x = 29,614.13 × 11,900.03
  4. Step 4: Simplify right side
    21,459.47x = 352,408,857.60
  5. Step 5: Solve for x
    x = 352,408,857.60/21,459.47
  6. Step 6: Final answer
    x = 16,422.07

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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.