Home / 19,990.32-27,594.72-12,039.36

Finding the Fourth Proportional to 19,990.32, 27,594.72 and 12,039.36

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Solution

The fourth proportional to 19,990.32, 27,594.72 and 12,039.36 is: 16,619.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.32 : 27,594.72 = 12,039.36 : x
  2. Step 2: Convert to fraction form
    19,990.32/27,594.72 = 12,039.36/x
  3. Step 3: Cross multiply
    19,990.32x = 27,594.72 × 12,039.36
  4. Step 4: Simplify right side
    19,990.32x = 332,222,768.18
  5. Step 5: Solve for x
    x = 332,222,768.18/19,990.32
  6. Step 6: Final answer
    x = 16,619.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.