Home / 23,431.36-32,334.78-12,820.36

Finding the Fourth Proportional to 23,431.36, 32,334.78 and 12,820.36

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Solution

The fourth proportional to 23,431.36, 32,334.78 and 12,820.36 is: 17,691.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,431.36 : 32,334.78 = 12,820.36 : x
  2. Step 2: Convert to fraction form
    23,431.36/32,334.78 = 12,820.36/x
  3. Step 3: Cross multiply
    23,431.36x = 32,334.78 × 12,820.36
  4. Step 4: Simplify right side
    23,431.36x = 414,543,520.12
  5. Step 5: Solve for x
    x = 414,543,520.12/23,431.36
  6. Step 6: Final answer
    x = 17,691.82

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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.