Home / 20,416.02-30,634.40-9,321.24

Finding the Fourth Proportional to 20,416.02, 30,634.40 and 9,321.24

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Solution

The fourth proportional to 20,416.02, 30,634.40 and 9,321.24 is: 13,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.02 : 30,634.40 = 9,321.24 : x
  2. Step 2: Convert to fraction form
    20,416.02/30,634.40 = 9,321.24/x
  3. Step 3: Cross multiply
    20,416.02x = 30,634.40 × 9,321.24
  4. Step 4: Simplify right side
    20,416.02x = 285,550,732.84
  5. Step 5: Solve for x
    x = 285,550,732.84/20,416.02
  6. Step 6: Final answer
    x = 13,986.60

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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.