Home / 12,757.74-19,120.38-7,214.16

Finding the Fourth Proportional to 12,757.74, 19,120.38 and 7,214.16

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Solution

The fourth proportional to 12,757.74, 19,120.38 and 7,214.16 is: 10,812.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,757.74 : 19,120.38 = 7,214.16 : x
  2. Step 2: Convert to fraction form
    12,757.74/19,120.38 = 7,214.16/x
  3. Step 3: Cross multiply
    12,757.74x = 19,120.38 × 7,214.16
  4. Step 4: Simplify right side
    12,757.74x = 137,937,480.58
  5. Step 5: Solve for x
    x = 137,937,480.58/12,757.74
  6. Step 6: Final answer
    x = 10,812.06

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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.