Home / 20,156.10-30,204.45-14,621.10

Finding the Fourth Proportional to 20,156.10, 30,204.45 and 14,621.10

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Solution

The fourth proportional to 20,156.10, 30,204.45 and 14,621.10 is: 21,910.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.10 : 30,204.45 = 14,621.10 : x
  2. Step 2: Convert to fraction form
    20,156.10/30,204.45 = 14,621.10/x
  3. Step 3: Cross multiply
    20,156.10x = 30,204.45 × 14,621.10
  4. Step 4: Simplify right side
    20,156.10x = 441,622,283.90
  5. Step 5: Solve for x
    x = 441,622,283.90/20,156.10
  6. Step 6: Final answer
    x = 21,910.11

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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.