Home / 18,639.32-25,731.78-14,380.81

Finding the Fourth Proportional to 18,639.32, 25,731.78 and 14,380.81

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Solution

The fourth proportional to 18,639.32, 25,731.78 and 14,380.81 is: 19,852.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.32 : 25,731.78 = 14,380.81 : x
  2. Step 2: Convert to fraction form
    18,639.32/25,731.78 = 14,380.81/x
  3. Step 3: Cross multiply
    18,639.32x = 25,731.78 × 14,380.81
  4. Step 4: Simplify right side
    18,639.32x = 370,043,842.22
  5. Step 5: Solve for x
    x = 370,043,842.22/18,639.32
  6. Step 6: Final answer
    x = 19,852.87

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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.