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Finding the Fourth Proportional to 18,957.16, 26,133.19 and 13,274

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Solution

The fourth proportional to 18,957.16, 26,133.19 and 13,274 is: 18,298.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.16 : 26,133.19 = 13,274 : x
  2. Step 2: Convert to fraction form
    18,957.16/26,133.19 = 13,274/x
  3. Step 3: Cross multiply
    18,957.16x = 26,133.19 × 13,274
  4. Step 4: Simplify right side
    18,957.16x = 346,891,964.06
  5. Step 5: Solve for x
    x = 346,891,964.06/18,957.16
  6. Step 6: Final answer
    x = 18,298.73

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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.