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Finding the Fourth Proportional to 18,898.92, 26,080.54 and 10,515.42

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Solution

The fourth proportional to 18,898.92, 26,080.54 and 10,515.42 is: 14,511.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.92 : 26,080.54 = 10,515.42 : x
  2. Step 2: Convert to fraction form
    18,898.92/26,080.54 = 10,515.42/x
  3. Step 3: Cross multiply
    18,898.92x = 26,080.54 × 10,515.42
  4. Step 4: Simplify right side
    18,898.92x = 274,247,831.93
  5. Step 5: Solve for x
    x = 274,247,831.93/18,898.92
  6. Step 6: Final answer
    x = 14,511.30

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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.