Home / 21,964.16-30,310.60-11,892.72

Finding the Fourth Proportional to 21,964.16, 30,310.60 and 11,892.72

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Solution

The fourth proportional to 21,964.16, 30,310.60 and 11,892.72 is: 16,411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,964.16 : 30,310.60 = 11,892.72 : x
  2. Step 2: Convert to fraction form
    21,964.16/30,310.60 = 11,892.72/x
  3. Step 3: Cross multiply
    21,964.16x = 30,310.60 × 11,892.72
  4. Step 4: Simplify right side
    21,964.16x = 360,475,449.10
  5. Step 5: Solve for x
    x = 360,475,449.10/21,964.16
  6. Step 6: Final answer
    x = 16,411.98

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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.