Home / 11,689.16-16,130.79-6,384.00

Finding the Fourth Proportional to 11,689.16, 16,130.79 and 6,384.00

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Solution

The fourth proportional to 11,689.16, 16,130.79 and 6,384.00 is: 8,809.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.16 : 16,130.79 = 6,384.00 : x
  2. Step 2: Convert to fraction form
    11,689.16/16,130.79 = 6,384.00/x
  3. Step 3: Cross multiply
    11,689.16x = 16,130.79 × 6,384.00
  4. Step 4: Simplify right side
    11,689.16x = 102,978,902.87
  5. Step 5: Solve for x
    x = 102,978,902.87/11,689.16
  6. Step 6: Final answer
    x = 8,809.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.