Home / 18,383.76-25,375.28-11,312.46

Finding the Fourth Proportional to 18,383.76, 25,375.28 and 11,312.46

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Solution

The fourth proportional to 18,383.76, 25,375.28 and 11,312.46 is: 15,614.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.76 : 25,375.28 = 11,312.46 : x
  2. Step 2: Convert to fraction form
    18,383.76/25,375.28 = 11,312.46/x
  3. Step 3: Cross multiply
    18,383.76x = 25,375.28 × 11,312.46
  4. Step 4: Simplify right side
    18,383.76x = 287,056,783.43
  5. Step 5: Solve for x
    x = 287,056,783.43/18,383.76
  6. Step 6: Final answer
    x = 15,614.69

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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.