Home / 12,355.74-18,536.31-3,591.45

Finding the Fourth Proportional to 12,355.74, 18,536.31 and 3,591.45

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Solution

The fourth proportional to 12,355.74, 18,536.31 and 3,591.45 is: 5,387.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.74 : 18,536.31 = 3,591.45 : x
  2. Step 2: Convert to fraction form
    12,355.74/18,536.31 = 3,591.45/x
  3. Step 3: Cross multiply
    12,355.74x = 18,536.31 × 3,591.45
  4. Step 4: Simplify right side
    12,355.74x = 66,572,230.55
  5. Step 5: Solve for x
    x = 66,572,230.55/12,355.74
  6. Step 6: Final answer
    x = 5,387.96

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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.