Home / 21,200.84-31,801.42-6,409.80

Finding the Fourth Proportional to 21,200.84, 31,801.42 and 6,409.80

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Solution

The fourth proportional to 21,200.84, 31,801.42 and 6,409.80 is: 9,614.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.84 : 31,801.42 = 6,409.80 : x
  2. Step 2: Convert to fraction form
    21,200.84/31,801.42 = 6,409.80/x
  3. Step 3: Cross multiply
    21,200.84x = 31,801.42 × 6,409.80
  4. Step 4: Simplify right side
    21,200.84x = 203,840,741.92
  5. Step 5: Solve for x
    x = 203,840,741.92/21,200.84
  6. Step 6: Final answer
    x = 9,614.75

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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.