Home / 13,811.28-19,058.66-8,145.76

Finding the Fourth Proportional to 13,811.28, 19,058.66 and 8,145.76

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Solution

The fourth proportional to 13,811.28, 19,058.66 and 8,145.76 is: 11,240.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.28 : 19,058.66 = 8,145.76 : x
  2. Step 2: Convert to fraction form
    13,811.28/19,058.66 = 8,145.76/x
  3. Step 3: Cross multiply
    13,811.28x = 19,058.66 × 8,145.76
  4. Step 4: Simplify right side
    13,811.28x = 155,247,270.28
  5. Step 5: Solve for x
    x = 155,247,270.28/13,811.28
  6. Step 6: Final answer
    x = 11,240.61

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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.