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Finding the Fourth Proportional to 18,959.52, 26,155.83 and 11,401.50

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Solution

The fourth proportional to 18,959.52, 26,155.83 and 11,401.50 is: 15,729.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959.52 : 26,155.83 = 11,401.50 : x
  2. Step 2: Convert to fraction form
    18,959.52/26,155.83 = 11,401.50/x
  3. Step 3: Cross multiply
    18,959.52x = 26,155.83 × 11,401.50
  4. Step 4: Simplify right side
    18,959.52x = 298,215,695.75
  5. Step 5: Solve for x
    x = 298,215,695.75/18,959.52
  6. Step 6: Final answer
    x = 15,729.07

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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.