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Finding the Fourth Proportional to 21,873.94, 30,186.03 and 11,937.94

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Solution

The fourth proportional to 21,873.94, 30,186.03 and 11,937.94 is: 16,474.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,873.94 : 30,186.03 = 11,937.94 : x
  2. Step 2: Convert to fraction form
    21,873.94/30,186.03 = 11,937.94/x
  3. Step 3: Cross multiply
    21,873.94x = 30,186.03 × 11,937.94
  4. Step 4: Simplify right side
    21,873.94x = 360,358,984.28
  5. Step 5: Solve for x
    x = 360,358,984.28/21,873.94
  6. Step 6: Final answer
    x = 16,474.35

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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.