Home / 12,942.69-17,816.84-9,579.17

Finding the Fourth Proportional to 12,942.69, 17,816.84 and 9,579.17

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Solution

The fourth proportional to 12,942.69, 17,816.84 and 9,579.17 is: 13,186.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.69 : 17,816.84 = 9,579.17 : x
  2. Step 2: Convert to fraction form
    12,942.69/17,816.84 = 9,579.17/x
  3. Step 3: Cross multiply
    12,942.69x = 17,816.84 × 9,579.17
  4. Step 4: Simplify right side
    12,942.69x = 170,670,402.24
  5. Step 5: Solve for x
    x = 170,670,402.24/12,942.69
  6. Step 6: Final answer
    x = 13,186.63

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1.5x scale

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.