Home / 11,688.30-17,520.75-4,665.78

Finding the Fourth Proportional to 11,688.30, 17,520.75 and 4,665.78

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Solution

The fourth proportional to 11,688.30, 17,520.75 and 4,665.78 is: 6,994.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.30 : 17,520.75 = 4,665.78 : x
  2. Step 2: Convert to fraction form
    11,688.30/17,520.75 = 4,665.78/x
  3. Step 3: Cross multiply
    11,688.30x = 17,520.75 × 4,665.78
  4. Step 4: Simplify right side
    11,688.30x = 81,747,964.94
  5. Step 5: Solve for x
    x = 81,747,964.94/11,688.30
  6. Step 6: Final answer
    x = 6,994.00

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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.