Home / 12,591.80-18,888.37-3,231.90

Finding the Fourth Proportional to 12,591.80, 18,888.37 and 3,231.90

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Solution

The fourth proportional to 12,591.80, 18,888.37 and 3,231.90 is: 4,848.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.80 : 18,888.37 = 3,231.90 : x
  2. Step 2: Convert to fraction form
    12,591.80/18,888.37 = 3,231.90/x
  3. Step 3: Cross multiply
    12,591.80x = 18,888.37 × 3,231.90
  4. Step 4: Simplify right side
    12,591.80x = 61,045,220.48
  5. Step 5: Solve for x
    x = 61,045,220.48/12,591.80
  6. Step 6: Final answer
    x = 4,848.02

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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.