Home / 21,797.16-30,080.10-12,235.71

Finding the Fourth Proportional to 21,797.16, 30,080.10 and 12,235.71

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Solution

The fourth proportional to 21,797.16, 30,080.10 and 12,235.71 is: 16,885.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797.16 : 30,080.10 = 12,235.71 : x
  2. Step 2: Convert to fraction form
    21,797.16/30,080.10 = 12,235.71/x
  3. Step 3: Cross multiply
    21,797.16x = 30,080.10 × 12,235.71
  4. Step 4: Simplify right side
    21,797.16x = 368,051,380.37
  5. Step 5: Solve for x
    x = 368,051,380.37/21,797.16
  6. Step 6: Final answer
    x = 16,885.29

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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.