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Finding the Fourth Proportional to 18,659.53, 25,751.97 and 13,935.61

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Solution

The fourth proportional to 18,659.53, 25,751.97 and 13,935.61 is: 19,232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,659.53 : 25,751.97 = 13,935.61 : x
  2. Step 2: Convert to fraction form
    18,659.53/25,751.97 = 13,935.61/x
  3. Step 3: Cross multiply
    18,659.53x = 25,751.97 × 13,935.61
  4. Step 4: Simplify right side
    18,659.53x = 358,869,410.65
  5. Step 5: Solve for x
    x = 358,869,410.65/18,659.53
  6. Step 6: Final answer
    x = 19,232.50

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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.