Home / 18,962.88-26,181-12,992.64

Finding the Fourth Proportional to 18,962.88, 26,181 and 12,992.64

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Solution

The fourth proportional to 18,962.88, 26,181 and 12,992.64 is: 17,938.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.88 : 26,181 = 12,992.64 : x
  2. Step 2: Convert to fraction form
    18,962.88/26,181 = 12,992.64/x
  3. Step 3: Cross multiply
    18,962.88x = 26,181 × 12,992.64
  4. Step 4: Simplify right side
    18,962.88x = 340,160,307.84
  5. Step 5: Solve for x
    x = 340,160,307.84/18,962.88
  6. Step 6: Final answer
    x = 17,938.22

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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.