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Finding the Fourth Proportional to 15,939, 21,983.46 and 10,274.67

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Solution

The fourth proportional to 15,939, 21,983.46 and 10,274.67 is: 14,171.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939 : 21,983.46 = 10,274.67 : x
  2. Step 2: Convert to fraction form
    15,939/21,983.46 = 10,274.67/x
  3. Step 3: Cross multiply
    15,939x = 21,983.46 × 10,274.67
  4. Step 4: Simplify right side
    15,939x = 225,872,796.96
  5. Step 5: Solve for x
    x = 225,872,796.96/15,939
  6. Step 6: Final answer
    x = 14,171.08

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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.