Home / 20,497.95-30,754.35-7,172.91

Finding the Fourth Proportional to 20,497.95, 30,754.35 and 7,172.91

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Solution

The fourth proportional to 20,497.95, 30,754.35 and 7,172.91 is: 10,761.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.95 : 30,754.35 = 7,172.91 : x
  2. Step 2: Convert to fraction form
    20,497.95/30,754.35 = 7,172.91/x
  3. Step 3: Cross multiply
    20,497.95x = 30,754.35 × 7,172.91
  4. Step 4: Simplify right side
    20,497.95x = 220,598,184.66
  5. Step 5: Solve for x
    x = 220,598,184.66/20,497.95
  6. Step 6: Final answer
    x = 10,761.96

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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.