Home / 13,885.99-19,161.43-8,220.92

Finding the Fourth Proportional to 13,885.99, 19,161.43 and 8,220.92

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Solution

The fourth proportional to 13,885.99, 19,161.43 and 8,220.92 is: 11,344.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.99 : 19,161.43 = 8,220.92 : x
  2. Step 2: Convert to fraction form
    13,885.99/19,161.43 = 8,220.92/x
  3. Step 3: Cross multiply
    13,885.99x = 19,161.43 × 8,220.92
  4. Step 4: Simplify right side
    13,885.99x = 157,524,466.76
  5. Step 5: Solve for x
    x = 157,524,466.76/13,885.99
  6. Step 6: Final answer
    x = 11,344.13

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Half scale
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Double scale
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Similar ratio
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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.