Home / 18,150.90-27,190.82-12,515.30

Finding the Fourth Proportional to 18,150.90, 27,190.82 and 12,515.30

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Solution

The fourth proportional to 18,150.90, 27,190.82 and 12,515.30 is: 18,748.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,150.90 : 27,190.82 = 12,515.30 : x
  2. Step 2: Convert to fraction form
    18,150.90/27,190.82 = 12,515.30/x
  3. Step 3: Cross multiply
    18,150.90x = 27,190.82 × 12,515.30
  4. Step 4: Simplify right side
    18,150.90x = 340,301,269.55
  5. Step 5: Solve for x
    x = 340,301,269.55/18,150.90
  6. Step 6: Final answer
    x = 18,748.45

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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.