Home / 20,497.45-30,753.60-7,172.41

Finding the Fourth Proportional to 20,497.45, 30,753.60 and 7,172.41

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Solution

The fourth proportional to 20,497.45, 30,753.60 and 7,172.41 is: 10,761.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.45 : 30,753.60 = 7,172.41 : x
  2. Step 2: Convert to fraction form
    20,497.45/30,753.60 = 7,172.41/x
  3. Step 3: Cross multiply
    20,497.45x = 30,753.60 × 7,172.41
  4. Step 4: Simplify right side
    20,497.45x = 220,577,428.18
  5. Step 5: Solve for x
    x = 220,577,428.18/20,497.45
  6. Step 6: Final answer
    x = 10,761.21

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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.