Home / 21,216.35-31,824.69-6,426.42

Finding the Fourth Proportional to 21,216.35, 31,824.69 and 6,426.42

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Solution

The fourth proportional to 21,216.35, 31,824.69 and 6,426.42 is: 9,639.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.35 : 31,824.69 = 6,426.42 : x
  2. Step 2: Convert to fraction form
    21,216.35/31,824.69 = 6,426.42/x
  3. Step 3: Cross multiply
    21,216.35x = 31,824.69 × 6,426.42
  4. Step 4: Simplify right side
    21,216.35x = 204,518,824.31
  5. Step 5: Solve for x
    x = 204,518,824.31/21,216.35
  6. Step 6: Final answer
    x = 9,639.68

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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.