Home / 20,485.02-30,727.32-9,388.56

Finding the Fourth Proportional to 20,485.02, 30,727.32 and 9,388.56

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Solution

The fourth proportional to 20,485.02, 30,727.32 and 9,388.56 is: 14,082.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.02 : 30,727.32 = 9,388.56 : x
  2. Step 2: Convert to fraction form
    20,485.02/30,727.32 = 9,388.56/x
  3. Step 3: Cross multiply
    20,485.02x = 30,727.32 × 9,388.56
  4. Step 4: Simplify right side
    20,485.02x = 288,485,287.46
  5. Step 5: Solve for x
    x = 288,485,287.46/20,485.02
  6. Step 6: Final answer
    x = 14,082.74

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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.