Home / 20,185.20-30,264.84-8,495.28

Finding the Fourth Proportional to 20,185.20, 30,264.84 and 8,495.28

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Solution

The fourth proportional to 20,185.20, 30,264.84 and 8,495.28 is: 12,737.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.20 : 30,264.84 = 8,495.28 : x
  2. Step 2: Convert to fraction form
    20,185.20/30,264.84 = 8,495.28/x
  3. Step 3: Cross multiply
    20,185.20x = 30,264.84 × 8,495.28
  4. Step 4: Simplify right side
    20,185.20x = 257,108,289.96
  5. Step 5: Solve for x
    x = 257,108,289.96/20,185.20
  6. Step 6: Final answer
    x = 12,737.47

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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.