Home / 20,449.21-30,675.28-5,456.25

Finding the Fourth Proportional to 20,449.21, 30,675.28 and 5,456.25

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Solution

The fourth proportional to 20,449.21, 30,675.28 and 5,456.25 is: 8,184.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.21 : 30,675.28 = 5,456.25 : x
  2. Step 2: Convert to fraction form
    20,449.21/30,675.28 = 5,456.25/x
  3. Step 3: Cross multiply
    20,449.21x = 30,675.28 × 5,456.25
  4. Step 4: Simplify right side
    20,449.21x = 167,371,996.50
  5. Step 5: Solve for x
    x = 167,371,996.50/20,449.21
  6. Step 6: Final answer
    x = 8,184.77

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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.