Home / 12,611.40-18,914.05-5,587.53

Finding the Fourth Proportional to 12,611.40, 18,914.05 and 5,587.53

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Solution

The fourth proportional to 12,611.40, 18,914.05 and 5,587.53 is: 8,379.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.40 : 18,914.05 = 5,587.53 : x
  2. Step 2: Convert to fraction form
    12,611.40/18,914.05 = 5,587.53/x
  3. Step 3: Cross multiply
    12,611.40x = 18,914.05 × 5,587.53
  4. Step 4: Simplify right side
    12,611.40x = 105,682,821.80
  5. Step 5: Solve for x
    x = 105,682,821.80/12,611.40
  6. Step 6: Final answer
    x = 8,379.94

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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.