Home / 21,964.02-30,310.77-12,405.84

Finding the Fourth Proportional to 21,964.02, 30,310.77 and 12,405.84

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Solution

The fourth proportional to 21,964.02, 30,310.77 and 12,405.84 is: 17,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,964.02 : 30,310.77 = 12,405.84 : x
  2. Step 2: Convert to fraction form
    21,964.02/30,310.77 = 12,405.84/x
  3. Step 3: Cross multiply
    21,964.02x = 30,310.77 × 12,405.84
  4. Step 4: Simplify right side
    21,964.02x = 376,030,562.90
  5. Step 5: Solve for x
    x = 376,030,562.90/21,964.02
  6. Step 6: Final answer
    x = 17,120.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.