Home / 12,742.97-19,119.51-5,721.08

Finding the Fourth Proportional to 12,742.97, 19,119.51 and 5,721.08

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Solution

The fourth proportional to 12,742.97, 19,119.51 and 5,721.08 is: 8,583.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.97 : 19,119.51 = 5,721.08 : x
  2. Step 2: Convert to fraction form
    12,742.97/19,119.51 = 5,721.08/x
  3. Step 3: Cross multiply
    12,742.97x = 19,119.51 × 5,721.08
  4. Step 4: Simplify right side
    12,742.97x = 109,384,150.67
  5. Step 5: Solve for x
    x = 109,384,150.67/12,742.97
  6. Step 6: Final answer
    x = 8,583.89

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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.