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Finding the Fourth Proportional to 18,908.70, 26,102.11 and 13,461.30

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Solution

The fourth proportional to 18,908.70, 26,102.11 and 13,461.30 is: 18,582.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.70 : 26,102.11 = 13,461.30 : x
  2. Step 2: Convert to fraction form
    18,908.70/26,102.11 = 13,461.30/x
  3. Step 3: Cross multiply
    18,908.70x = 26,102.11 × 13,461.30
  4. Step 4: Simplify right side
    18,908.70x = 351,368,333.34
  5. Step 5: Solve for x
    x = 351,368,333.34/18,908.70
  6. Step 6: Final answer
    x = 18,582.36

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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.