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Finding the Fourth Proportional to 18,857.88, 26,023.95 and 11,788.34

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Solution

The fourth proportional to 18,857.88, 26,023.95 and 11,788.34 is: 16,267.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.88 : 26,023.95 = 11,788.34 : x
  2. Step 2: Convert to fraction form
    18,857.88/26,023.95 = 11,788.34/x
  3. Step 3: Cross multiply
    18,857.88x = 26,023.95 × 11,788.34
  4. Step 4: Simplify right side
    18,857.88x = 306,779,040.62
  5. Step 5: Solve for x
    x = 306,779,040.62/18,857.88
  6. Step 6: Final answer
    x = 16,267.95

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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.