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Finding the Fourth Proportional to 20,539.76, 30,804.36 and 8,060.24

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Solution

The fourth proportional to 20,539.76, 30,804.36 and 8,060.24 is: 12,088.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.76 : 30,804.36 = 8,060.24 : x
  2. Step 2: Convert to fraction form
    20,539.76/30,804.36 = 8,060.24/x
  3. Step 3: Cross multiply
    20,539.76x = 30,804.36 × 8,060.24
  4. Step 4: Simplify right side
    20,539.76x = 248,290,534.65
  5. Step 5: Solve for x
    x = 248,290,534.65/20,539.76
  6. Step 6: Final answer
    x = 12,088.29

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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.