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Finding the Fourth Proportional to 20,366.56, 30,541.20 and 7,222.24

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Solution

The fourth proportional to 20,366.56, 30,541.20 and 7,222.24 is: 10,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366.56 : 30,541.20 = 7,222.24 : x
  2. Step 2: Convert to fraction form
    20,366.56/30,541.20 = 7,222.24/x
  3. Step 3: Cross multiply
    20,366.56x = 30,541.20 × 7,222.24
  4. Step 4: Simplify right side
    20,366.56x = 220,575,876.29
  5. Step 5: Solve for x
    x = 220,575,876.29/20,366.56
  6. Step 6: Final answer
    x = 10,830.30

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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.