Home / 13,635.90-18,818.46-10,272.78

Finding the Fourth Proportional to 13,635.90, 18,818.46 and 10,272.78

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Solution

The fourth proportional to 13,635.90, 18,818.46 and 10,272.78 is: 14,177.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.90 : 18,818.46 = 10,272.78 : x
  2. Step 2: Convert to fraction form
    13,635.90/18,818.46 = 10,272.78/x
  3. Step 3: Cross multiply
    13,635.90x = 18,818.46 × 10,272.78
  4. Step 4: Simplify right side
    13,635.90x = 193,317,899.52
  5. Step 5: Solve for x
    x = 193,317,899.52/13,635.90
  6. Step 6: Final answer
    x = 14,177.13

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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.