Home / 13,882.22-19,158.15-8,220.21

Finding the Fourth Proportional to 13,882.22, 19,158.15 and 8,220.21

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Solution

The fourth proportional to 13,882.22, 19,158.15 and 8,220.21 is: 11,344.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,882.22 : 19,158.15 = 8,220.21 : x
  2. Step 2: Convert to fraction form
    13,882.22/19,158.15 = 8,220.21/x
  3. Step 3: Cross multiply
    13,882.22x = 19,158.15 × 8,220.21
  4. Step 4: Simplify right side
    13,882.22x = 157,484,016.21
  5. Step 5: Solve for x
    x = 157,484,016.21/13,882.22
  6. Step 6: Final answer
    x = 11,344.30

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Double scale
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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.