Home / 18,936.84-26,129.46-13,288.92

Finding the Fourth Proportional to 18,936.84, 26,129.46 and 13,288.92

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Solution

The fourth proportional to 18,936.84, 26,129.46 and 13,288.92 is: 18,336.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.84 : 26,129.46 = 13,288.92 : x
  2. Step 2: Convert to fraction form
    18,936.84/26,129.46 = 13,288.92/x
  3. Step 3: Cross multiply
    18,936.84x = 26,129.46 × 13,288.92
  4. Step 4: Simplify right side
    18,936.84x = 347,232,303.58
  5. Step 5: Solve for x
    x = 347,232,303.58/18,936.84
  6. Step 6: Final answer
    x = 18,336.34

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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.