Home / 18,688.38-25,759.88-13,644.61

Finding the Fourth Proportional to 18,688.38, 25,759.88 and 13,644.61

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Solution

The fourth proportional to 18,688.38, 25,759.88 and 13,644.61 is: 18,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.38 : 25,759.88 = 13,644.61 : x
  2. Step 2: Convert to fraction form
    18,688.38/25,759.88 = 13,644.61/x
  3. Step 3: Cross multiply
    18,688.38x = 25,759.88 × 13,644.61
  4. Step 4: Simplify right side
    18,688.38x = 351,483,516.25
  5. Step 5: Solve for x
    x = 351,483,516.25/18,688.38
  6. Step 6: Final answer
    x = 18,807.60

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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.