Home / 13,889.28-19,161.78-8,852.58

Finding the Fourth Proportional to 13,889.28, 19,161.78 and 8,852.58

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Solution

The fourth proportional to 13,889.28, 19,161.78 and 8,852.58 is: 12,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.28 : 19,161.78 = 8,852.58 : x
  2. Step 2: Convert to fraction form
    13,889.28/19,161.78 = 8,852.58/x
  3. Step 3: Cross multiply
    13,889.28x = 19,161.78 × 8,852.58
  4. Step 4: Simplify right side
    13,889.28x = 169,631,190.39
  5. Step 5: Solve for x
    x = 169,631,190.39/13,889.28
  6. Step 6: Final answer
    x = 12,213.10

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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.