Home / 12,741.81-19,115.12-5,721.66

Finding the Fourth Proportional to 12,741.81, 19,115.12 and 5,721.66

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Solution

The fourth proportional to 12,741.81, 19,115.12 and 5,721.66 is: 8,583.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,741.81 : 19,115.12 = 5,721.66 : x
  2. Step 2: Convert to fraction form
    12,741.81/19,115.12 = 5,721.66/x
  3. Step 3: Cross multiply
    12,741.81x = 19,115.12 × 5,721.66
  4. Step 4: Simplify right side
    12,741.81x = 109,370,231.80
  5. Step 5: Solve for x
    x = 109,370,231.80/12,741.81
  6. Step 6: Final answer
    x = 8,583.57

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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.