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Finding the Fourth Proportional to 13,964, 20,946 and 3,575.76

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Solution

The fourth proportional to 13,964, 20,946 and 3,575.76 is: 5,363.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,964 : 20,946 = 3,575.76 : x
  2. Step 2: Convert to fraction form
    13,964/20,946 = 3,575.76/x
  3. Step 3: Cross multiply
    13,964x = 20,946 × 3,575.76
  4. Step 4: Simplify right side
    13,964x = 74,897,868.96
  5. Step 5: Solve for x
    x = 74,897,868.96/13,964
  6. Step 6: Final answer
    x = 5,363.64

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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.