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Finding the Fourth Proportional to 20,448.80, 30,673.20 and 7,301.60

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Solution

The fourth proportional to 20,448.80, 30,673.20 and 7,301.60 is: 10,952.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.80 : 30,673.20 = 7,301.60 : x
  2. Step 2: Convert to fraction form
    20,448.80/30,673.20 = 7,301.60/x
  3. Step 3: Cross multiply
    20,448.80x = 30,673.20 × 7,301.60
  4. Step 4: Simplify right side
    20,448.80x = 223,963,437.12
  5. Step 5: Solve for x
    x = 223,963,437.12/20,448.80
  6. Step 6: Final answer
    x = 10,952.40

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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.