Home / 13,165.88-19,748.81-3,931.88

Finding the Fourth Proportional to 13,165.88, 19,748.81 and 3,931.88

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Solution

The fourth proportional to 13,165.88, 19,748.81 and 3,931.88 is: 5,897.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.88 : 19,748.81 = 3,931.88 : x
  2. Step 2: Convert to fraction form
    13,165.88/19,748.81 = 3,931.88/x
  3. Step 3: Cross multiply
    13,165.88x = 19,748.81 × 3,931.88
  4. Step 4: Simplify right side
    13,165.88x = 77,649,862.15
  5. Step 5: Solve for x
    x = 77,649,862.15/13,165.88
  6. Step 6: Final answer
    x = 5,897.81

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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.