Home / 20,452.02-30,662.46-7,980.80

Finding the Fourth Proportional to 20,452.02, 30,662.46 and 7,980.80

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Solution

The fourth proportional to 20,452.02, 30,662.46 and 7,980.80 is: 11,965.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.02 : 30,662.46 = 7,980.80 : x
  2. Step 2: Convert to fraction form
    20,452.02/30,662.46 = 7,980.80/x
  3. Step 3: Cross multiply
    20,452.02x = 30,662.46 × 7,980.80
  4. Step 4: Simplify right side
    20,452.02x = 244,710,960.77
  5. Step 5: Solve for x
    x = 244,710,960.77/20,452.02
  6. Step 6: Final answer
    x = 11,965.12

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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.