Home / 18,180.32-25,073.82-12,820.60

Finding the Fourth Proportional to 18,180.32, 25,073.82 and 12,820.60

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Solution

The fourth proportional to 18,180.32, 25,073.82 and 12,820.60 is: 17,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,180.32 : 25,073.82 = 12,820.60 : x
  2. Step 2: Convert to fraction form
    18,180.32/25,073.82 = 12,820.60/x
  3. Step 3: Cross multiply
    18,180.32x = 25,073.82 × 12,820.60
  4. Step 4: Simplify right side
    18,180.32x = 321,461,416.69
  5. Step 5: Solve for x
    x = 321,461,416.69/18,180.32
  6. Step 6: Final answer
    x = 17,681.83

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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.