Home / 12,942.06-17,860.67-7,278.59

Finding the Fourth Proportional to 12,942.06, 17,860.67 and 7,278.59

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Solution

The fourth proportional to 12,942.06, 17,860.67 and 7,278.59 is: 10,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.06 : 17,860.67 = 7,278.59 : x
  2. Step 2: Convert to fraction form
    12,942.06/17,860.67 = 7,278.59/x
  3. Step 3: Cross multiply
    12,942.06x = 17,860.67 × 7,278.59
  4. Step 4: Simplify right side
    12,942.06x = 130,000,368.36
  5. Step 5: Solve for x
    x = 130,000,368.36/12,942.06
  6. Step 6: Final answer
    x = 10,044.80

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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.