Home / 12,971.64-19,458.90-3,738.36

Finding the Fourth Proportional to 12,971.64, 19,458.90 and 3,738.36

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Solution

The fourth proportional to 12,971.64, 19,458.90 and 3,738.36 is: 5,607.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,971.64 : 19,458.90 = 3,738.36 : x
  2. Step 2: Convert to fraction form
    12,971.64/19,458.90 = 3,738.36/x
  3. Step 3: Cross multiply
    12,971.64x = 19,458.90 × 3,738.36
  4. Step 4: Simplify right side
    12,971.64x = 72,744,373.40
  5. Step 5: Solve for x
    x = 72,744,373.40/12,971.64
  6. Step 6: Final answer
    x = 5,607.96

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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.