Home / 11,309.80-16,966.30-4,385

Finding the Fourth Proportional to 11,309.80, 16,966.30 and 4,385

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Solution

The fourth proportional to 11,309.80, 16,966.30 and 4,385 is: 6,578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,309.80 : 16,966.30 = 4,385 : x
  2. Step 2: Convert to fraction form
    11,309.80/16,966.30 = 4,385/x
  3. Step 3: Cross multiply
    11,309.80x = 16,966.30 × 4,385
  4. Step 4: Simplify right side
    11,309.80x = 74,397,225.50
  5. Step 5: Solve for x
    x = 74,397,225.50/11,309.80
  6. Step 6: Final answer
    x = 6,578.12

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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.