Home / 21,226.41-31,835.52-20,172.74

Finding the Fourth Proportional to 21,226.41, 31,835.52 and 20,172.74

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Solution

The fourth proportional to 21,226.41, 31,835.52 and 20,172.74 is: 30,255.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.41 : 31,835.52 = 20,172.74 : x
  2. Step 2: Convert to fraction form
    21,226.41/31,835.52 = 20,172.74/x
  3. Step 3: Cross multiply
    21,226.41x = 31,835.52 × 20,172.74
  4. Step 4: Simplify right side
    21,226.41x = 642,209,508.55
  5. Step 5: Solve for x
    x = 642,209,508.55/21,226.41
  6. Step 6: Final answer
    x = 30,255.21

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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.