Home / 12,611.15-18,913.67-5,587.28

Finding the Fourth Proportional to 12,611.15, 18,913.67 and 5,587.28

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Solution

The fourth proportional to 12,611.15, 18,913.67 and 5,587.28 is: 8,379.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.15 : 18,913.67 = 5,587.28 : x
  2. Step 2: Convert to fraction form
    12,611.15/18,913.67 = 5,587.28/x
  3. Step 3: Cross multiply
    12,611.15x = 18,913.67 × 5,587.28
  4. Step 4: Simplify right side
    12,611.15x = 105,675,889.52
  5. Step 5: Solve for x
    x = 105,675,889.52/12,611.15
  6. Step 6: Final answer
    x = 8,379.56

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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.