Home / 18,905.34-26,086.38-10,521.84

Finding the Fourth Proportional to 18,905.34, 26,086.38 and 10,521.84

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Solution

The fourth proportional to 18,905.34, 26,086.38 and 10,521.84 is: 14,518.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.34 : 26,086.38 = 10,521.84 : x
  2. Step 2: Convert to fraction form
    18,905.34/26,086.38 = 10,521.84/x
  3. Step 3: Cross multiply
    18,905.34x = 26,086.38 × 10,521.84
  4. Step 4: Simplify right side
    18,905.34x = 274,476,716.54
  5. Step 5: Solve for x
    x = 274,476,716.54/18,905.34
  6. Step 6: Final answer
    x = 14,518.48

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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.