Home / 18,915.39-26,102.86-11,845.71

Finding the Fourth Proportional to 18,915.39, 26,102.86 and 11,845.71

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Solution

The fourth proportional to 18,915.39, 26,102.86 and 11,845.71 is: 16,346.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.39 : 26,102.86 = 11,845.71 : x
  2. Step 2: Convert to fraction form
    18,915.39/26,102.86 = 11,845.71/x
  3. Step 3: Cross multiply
    18,915.39x = 26,102.86 × 11,845.71
  4. Step 4: Simplify right side
    18,915.39x = 309,206,880.12
  5. Step 5: Solve for x
    x = 309,206,880.12/18,915.39
  6. Step 6: Final answer
    x = 16,346.84

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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.