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Finding the Fourth Proportional to 18,951.76, 26,148.18 and 12,237.67

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Solution

The fourth proportional to 18,951.76, 26,148.18 and 12,237.67 is: 16,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.76 : 26,148.18 = 12,237.67 : x
  2. Step 2: Convert to fraction form
    18,951.76/26,148.18 = 12,237.67/x
  3. Step 3: Cross multiply
    18,951.76x = 26,148.18 × 12,237.67
  4. Step 4: Simplify right side
    18,951.76x = 319,992,797.94
  5. Step 5: Solve for x
    x = 319,992,797.94/18,951.76
  6. Step 6: Final answer
    x = 16,884.60

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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.