Home / 12,086.13-18,129.80-4,295.55

Finding the Fourth Proportional to 12,086.13, 18,129.80 and 4,295.55

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Solution

The fourth proportional to 12,086.13, 18,129.80 and 4,295.55 is: 6,443.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.13 : 18,129.80 = 4,295.55 : x
  2. Step 2: Convert to fraction form
    12,086.13/18,129.80 = 4,295.55/x
  3. Step 3: Cross multiply
    12,086.13x = 18,129.80 × 4,295.55
  4. Step 4: Simplify right side
    12,086.13x = 77,877,462.39
  5. Step 5: Solve for x
    x = 77,877,462.39/12,086.13
  6. Step 6: Final answer
    x = 6,443.54

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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.