Home / 12,406.16-18,611.80-4,086.68

Finding the Fourth Proportional to 12,406.16, 18,611.80 and 4,086.68

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Solution

The fourth proportional to 12,406.16, 18,611.80 and 4,086.68 is: 6,130.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.16 : 18,611.80 = 4,086.68 : x
  2. Step 2: Convert to fraction form
    12,406.16/18,611.80 = 4,086.68/x
  3. Step 3: Cross multiply
    12,406.16x = 18,611.80 × 4,086.68
  4. Step 4: Simplify right side
    12,406.16x = 76,060,437.34
  5. Step 5: Solve for x
    x = 76,060,437.34/12,406.16
  6. Step 6: Final answer
    x = 6,130.86

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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.