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Finding the Fourth Proportional to 18,611.29, 25,682.25 and 10,653.40

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Solution

The fourth proportional to 18,611.29, 25,682.25 and 10,653.40 is: 14,700.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.29 : 25,682.25 = 10,653.40 : x
  2. Step 2: Convert to fraction form
    18,611.29/25,682.25 = 10,653.40/x
  3. Step 3: Cross multiply
    18,611.29x = 25,682.25 × 10,653.40
  4. Step 4: Simplify right side
    18,611.29x = 273,603,282.15
  5. Step 5: Solve for x
    x = 273,603,282.15/18,611.29
  6. Step 6: Final answer
    x = 14,700.93

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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.