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Finding the Fourth Proportional to 20,506.50, 30,763.80 and 7,359.84

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Solution

The fourth proportional to 20,506.50, 30,763.80 and 7,359.84 is: 11,041.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.50 : 30,763.80 = 7,359.84 : x
  2. Step 2: Convert to fraction form
    20,506.50/30,763.80 = 7,359.84/x
  3. Step 3: Cross multiply
    20,506.50x = 30,763.80 × 7,359.84
  4. Step 4: Simplify right side
    20,506.50x = 226,416,645.79
  5. Step 5: Solve for x
    x = 226,416,645.79/20,506.50
  6. Step 6: Final answer
    x = 11,041.21

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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.