Home / 14,079.38-21,139.83-7,851.56

Finding the Fourth Proportional to 14,079.38, 21,139.83 and 7,851.56

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Solution

The fourth proportional to 14,079.38, 21,139.83 and 7,851.56 is: 11,788.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.38 : 21,139.83 = 7,851.56 : x
  2. Step 2: Convert to fraction form
    14,079.38/21,139.83 = 7,851.56/x
  3. Step 3: Cross multiply
    14,079.38x = 21,139.83 × 7,851.56
  4. Step 4: Simplify right side
    14,079.38x = 165,980,537.94
  5. Step 5: Solve for x
    x = 165,980,537.94/14,079.38
  6. Step 6: Final answer
    x = 11,788.91

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1.5x scale

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.