Home / 21,216.14-31,824.30-6,425.19

Finding the Fourth Proportional to 21,216.14, 31,824.30 and 6,425.19

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Solution

The fourth proportional to 21,216.14, 31,824.30 and 6,425.19 is: 9,637.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.14 : 31,824.30 = 6,425.19 : x
  2. Step 2: Convert to fraction form
    21,216.14/31,824.30 = 6,425.19/x
  3. Step 3: Cross multiply
    21,216.14x = 31,824.30 × 6,425.19
  4. Step 4: Simplify right side
    21,216.14x = 204,477,174.12
  5. Step 5: Solve for x
    x = 204,477,174.12/21,216.14
  6. Step 6: Final answer
    x = 9,637.81

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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.