Home / 21,135.24-31,708.12-6,344.42

Finding the Fourth Proportional to 21,135.24, 31,708.12 and 6,344.42

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Solution

The fourth proportional to 21,135.24, 31,708.12 and 6,344.42 is: 9,518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.24 : 31,708.12 = 6,344.42 : x
  2. Step 2: Convert to fraction form
    21,135.24/31,708.12 = 6,344.42/x
  3. Step 3: Cross multiply
    21,135.24x = 31,708.12 × 6,344.42
  4. Step 4: Simplify right side
    21,135.24x = 201,169,630.69
  5. Step 5: Solve for x
    x = 201,169,630.69/21,135.24
  6. Step 6: Final answer
    x = 9,518.21

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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.