Home / 20,042.22-27,653.30-12,960.12

Finding the Fourth Proportional to 20,042.22, 27,653.30 and 12,960.12

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Solution

The fourth proportional to 20,042.22, 27,653.30 and 12,960.12 is: 17,881.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,042.22 : 27,653.30 = 12,960.12 : x
  2. Step 2: Convert to fraction form
    20,042.22/27,653.30 = 12,960.12/x
  3. Step 3: Cross multiply
    20,042.22x = 27,653.30 × 12,960.12
  4. Step 4: Simplify right side
    20,042.22x = 358,390,086.40
  5. Step 5: Solve for x
    x = 358,390,086.40/20,042.22
  6. Step 6: Final answer
    x = 17,881.76

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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.