Home / 13,110.88-19,660.56-8,180.32

Finding the Fourth Proportional to 13,110.88, 19,660.56 and 8,180.32

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Solution

The fourth proportional to 13,110.88, 19,660.56 and 8,180.32 is: 12,266.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.88 : 19,660.56 = 8,180.32 : x
  2. Step 2: Convert to fraction form
    13,110.88/19,660.56 = 8,180.32/x
  3. Step 3: Cross multiply
    13,110.88x = 19,660.56 × 8,180.32
  4. Step 4: Simplify right side
    13,110.88x = 160,829,672.18
  5. Step 5: Solve for x
    x = 160,829,672.18/13,110.88
  6. Step 6: Final answer
    x = 12,266.89

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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.