Home / 12,942.11-17,859.72-7,276.75

Finding the Fourth Proportional to 12,942.11, 17,859.72 and 7,276.75

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Solution

The fourth proportional to 12,942.11, 17,859.72 and 7,276.75 is: 10,041.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.11 : 17,859.72 = 7,276.75 : x
  2. Step 2: Convert to fraction form
    12,942.11/17,859.72 = 7,276.75/x
  3. Step 3: Cross multiply
    12,942.11x = 17,859.72 × 7,276.75
  4. Step 4: Simplify right side
    12,942.11x = 129,960,717.51
  5. Step 5: Solve for x
    x = 129,960,717.51/12,942.11
  6. Step 6: Final answer
    x = 10,041.69

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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.