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Finding the Fourth Proportional to 26,686.84, 36,808.74 and 18,730.84

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Solution

The fourth proportional to 26,686.84, 36,808.74 and 18,730.84 is: 25,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.84 : 36,808.74 = 18,730.84 : x
  2. Step 2: Convert to fraction form
    26,686.84/36,808.74 = 18,730.84/x
  3. Step 3: Cross multiply
    26,686.84x = 36,808.74 × 18,730.84
  4. Step 4: Simplify right side
    26,686.84x = 689,458,619.54
  5. Step 5: Solve for x
    x = 689,458,619.54/26,686.84
  6. Step 6: Final answer
    x = 25,835.15

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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.