Home / 12,611.63-18,917.59-4,291.81

Finding the Fourth Proportional to 12,611.63, 18,917.59 and 4,291.81

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Solution

The fourth proportional to 12,611.63, 18,917.59 and 4,291.81 is: 6,437.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.63 : 18,917.59 = 4,291.81 : x
  2. Step 2: Convert to fraction form
    12,611.63/18,917.59 = 4,291.81/x
  3. Step 3: Cross multiply
    12,611.63x = 18,917.59 × 4,291.81
  4. Step 4: Simplify right side
    12,611.63x = 81,190,701.94
  5. Step 5: Solve for x
    x = 81,190,701.94/12,611.63
  6. Step 6: Final answer
    x = 6,437.76

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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.