Home / 20,421.27-30,628.98-6,378.03

Finding the Fourth Proportional to 20,421.27, 30,628.98 and 6,378.03

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Solution

The fourth proportional to 20,421.27, 30,628.98 and 6,378.03 is: 9,566.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421.27 : 30,628.98 = 6,378.03 : x
  2. Step 2: Convert to fraction form
    20,421.27/30,628.98 = 6,378.03/x
  3. Step 3: Cross multiply
    20,421.27x = 30,628.98 × 6,378.03
  4. Step 4: Simplify right side
    20,421.27x = 195,352,553.31
  5. Step 5: Solve for x
    x = 195,352,553.31/20,421.27
  6. Step 6: Final answer
    x = 9,566.13

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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.