Home / 12,036.64-18,039.92-8,309.18

Finding the Fourth Proportional to 12,036.64, 18,039.92 and 8,309.18

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Solution

The fourth proportional to 12,036.64, 18,039.92 and 8,309.18 is: 12,453.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,036.64 : 18,039.92 = 8,309.18 : x
  2. Step 2: Convert to fraction form
    12,036.64/18,039.92 = 8,309.18/x
  3. Step 3: Cross multiply
    12,036.64x = 18,039.92 × 8,309.18
  4. Step 4: Simplify right side
    12,036.64x = 149,896,852.27
  5. Step 5: Solve for x
    x = 149,896,852.27/12,036.64
  6. Step 6: Final answer
    x = 12,453.39

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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.