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Finding the Fourth Proportional to 32,016.80, 47,996.40 and 20,928.80

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Solution

The fourth proportional to 32,016.80, 47,996.40 and 20,928.80 is: 31,374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,016.80 : 47,996.40 = 20,928.80 : x
  2. Step 2: Convert to fraction form
    32,016.80/47,996.40 = 20,928.80/x
  3. Step 3: Cross multiply
    32,016.80x = 47,996.40 × 20,928.80
  4. Step 4: Simplify right side
    32,016.80x = 1,004,507,056.32
  5. Step 5: Solve for x
    x = 1,004,507,056.32/32,016.80
  6. Step 6: Final answer
    x = 31,374.37

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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.