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Finding the Fourth Proportional to 20,365.84, 30,548.74 and 5,574.88

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Solution

The fourth proportional to 20,365.84, 30,548.74 and 5,574.88 is: 8,362.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.84 : 30,548.74 = 5,574.88 : x
  2. Step 2: Convert to fraction form
    20,365.84/30,548.74 = 5,574.88/x
  3. Step 3: Cross multiply
    20,365.84x = 30,548.74 × 5,574.88
  4. Step 4: Simplify right side
    20,365.84x = 170,305,559.65
  5. Step 5: Solve for x
    x = 170,305,559.65/20,365.84
  6. Step 6: Final answer
    x = 8,362.31

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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.