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Finding the Fourth Proportional to 17,955.90, 26,992.17 and 17,868.42

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Solution

The fourth proportional to 17,955.90, 26,992.17 and 17,868.42 is: 26,860.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,955.90 : 26,992.17 = 17,868.42 : x
  2. Step 2: Convert to fraction form
    17,955.90/26,992.17 = 17,868.42/x
  3. Step 3: Cross multiply
    17,955.90x = 26,992.17 × 17,868.42
  4. Step 4: Simplify right side
    17,955.90x = 482,307,430.27
  5. Step 5: Solve for x
    x = 482,307,430.27/17,955.90
  6. Step 6: Final answer
    x = 26,860.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.