Home / 12,660.29-18,977.40-4,761.34

Finding the Fourth Proportional to 12,660.29, 18,977.40 and 4,761.34

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Solution

The fourth proportional to 12,660.29, 18,977.40 and 4,761.34 is: 7,137.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.29 : 18,977.40 = 4,761.34 : x
  2. Step 2: Convert to fraction form
    12,660.29/18,977.40 = 4,761.34/x
  3. Step 3: Cross multiply
    12,660.29x = 18,977.40 × 4,761.34
  4. Step 4: Simplify right side
    12,660.29x = 90,357,853.72
  5. Step 5: Solve for x
    x = 90,357,853.72/12,660.29
  6. Step 6: Final answer
    x = 7,137.11

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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.