Home / 21,245.23-31,871.49-6,455.62

Finding the Fourth Proportional to 21,245.23, 31,871.49 and 6,455.62

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Solution

The fourth proportional to 21,245.23, 31,871.49 and 6,455.62 is: 9,684.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.23 : 31,871.49 = 6,455.62 : x
  2. Step 2: Convert to fraction form
    21,245.23/31,871.49 = 6,455.62/x
  3. Step 3: Cross multiply
    21,245.23x = 31,871.49 × 6,455.62
  4. Step 4: Simplify right side
    21,245.23x = 205,750,228.27
  5. Step 5: Solve for x
    x = 205,750,228.27/21,245.23
  6. Step 6: Final answer
    x = 9,684.54

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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.