Home / 21,797.02-30,078.87-12,107.11

Finding the Fourth Proportional to 21,797.02, 30,078.87 and 12,107.11

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Solution

The fourth proportional to 21,797.02, 30,078.87 and 12,107.11 is: 16,707.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797.02 : 30,078.87 = 12,107.11 : x
  2. Step 2: Convert to fraction form
    21,797.02/30,078.87 = 12,107.11/x
  3. Step 3: Cross multiply
    21,797.02x = 30,078.87 × 12,107.11
  4. Step 4: Simplify right side
    21,797.02x = 364,168,125.89
  5. Step 5: Solve for x
    x = 364,168,125.89/21,797.02
  6. Step 6: Final answer
    x = 16,707.24

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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.