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Finding the Fourth Proportional to 18,863.70, 26,030.70 and 11,310.63

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Solution

The fourth proportional to 18,863.70, 26,030.70 and 11,310.63 is: 15,607.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.70 : 26,030.70 = 11,310.63 : x
  2. Step 2: Convert to fraction form
    18,863.70/26,030.70 = 11,310.63/x
  3. Step 3: Cross multiply
    18,863.70x = 26,030.70 × 11,310.63
  4. Step 4: Simplify right side
    18,863.70x = 294,423,616.34
  5. Step 5: Solve for x
    x = 294,423,616.34/18,863.70
  6. Step 6: Final answer
    x = 15,607.95

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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.