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Finding the Fourth Proportional to 18,898, 26,081.76 and 10,938.76

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Solution

The fourth proportional to 18,898, 26,081.76 and 10,938.76 is: 15,096.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898 : 26,081.76 = 10,938.76 : x
  2. Step 2: Convert to fraction form
    18,898/26,081.76 = 10,938.76/x
  3. Step 3: Cross multiply
    18,898x = 26,081.76 × 10,938.76
  4. Step 4: Simplify right side
    18,898x = 285,302,113.02
  5. Step 5: Solve for x
    x = 285,302,113.02/18,898
  6. Step 6: Final answer
    x = 15,096.95

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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.