Home / 12,937.12-19,405.17-4,172.31

Finding the Fourth Proportional to 12,937.12, 19,405.17 and 4,172.31

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Solution

The fourth proportional to 12,937.12, 19,405.17 and 4,172.31 is: 6,258.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,937.12 : 19,405.17 = 4,172.31 : x
  2. Step 2: Convert to fraction form
    12,937.12/19,405.17 = 4,172.31/x
  3. Step 3: Cross multiply
    12,937.12x = 19,405.17 × 4,172.31
  4. Step 4: Simplify right side
    12,937.12x = 80,964,384.84
  5. Step 5: Solve for x
    x = 80,964,384.84/12,937.12
  6. Step 6: Final answer
    x = 6,258.30

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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.