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Finding the Fourth Proportional to 26,687.84, 36,810.12 and 18,731.84

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Solution

The fourth proportional to 26,687.84, 36,810.12 and 18,731.84 is: 25,836.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,687.84 : 36,810.12 = 18,731.84 : x
  2. Step 2: Convert to fraction form
    26,687.84/36,810.12 = 18,731.84/x
  3. Step 3: Cross multiply
    26,687.84x = 36,810.12 × 18,731.84
  4. Step 4: Simplify right side
    26,687.84x = 689,521,278.22
  5. Step 5: Solve for x
    x = 689,521,278.22/26,687.84
  6. Step 6: Final answer
    x = 25,836.53

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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.