Home / 21,246.21-31,868.42-5,451.12

Finding the Fourth Proportional to 21,246.21, 31,868.42 and 5,451.12

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Solution

The fourth proportional to 21,246.21, 31,868.42 and 5,451.12 is: 8,176.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.21 : 31,868.42 = 5,451.12 : x
  2. Step 2: Convert to fraction form
    21,246.21/31,868.42 = 5,451.12/x
  3. Step 3: Cross multiply
    21,246.21x = 31,868.42 × 5,451.12
  4. Step 4: Simplify right side
    21,246.21x = 173,718,554.37
  5. Step 5: Solve for x
    x = 173,718,554.37/21,246.21
  6. Step 6: Final answer
    x = 8,176.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.