Home / 18,971.22-26,172.15-13,926.72

Finding the Fourth Proportional to 18,971.22, 26,172.15 and 13,926.72

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Solution

The fourth proportional to 18,971.22, 26,172.15 and 13,926.72 is: 19,212.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.22 : 26,172.15 = 13,926.72 : x
  2. Step 2: Convert to fraction form
    18,971.22/26,172.15 = 13,926.72/x
  3. Step 3: Cross multiply
    18,971.22x = 26,172.15 × 13,926.72
  4. Step 4: Simplify right side
    18,971.22x = 364,492,204.85
  5. Step 5: Solve for x
    x = 364,492,204.85/18,971.22
  6. Step 6: Final answer
    x = 19,212.90

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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.