Home / 10,429.91-15,644.87-2,638.72

Finding the Fourth Proportional to 10,429.91, 15,644.87 and 2,638.72

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Solution

The fourth proportional to 10,429.91, 15,644.87 and 2,638.72 is: 3,958.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.91 : 15,644.87 = 2,638.72 : x
  2. Step 2: Convert to fraction form
    10,429.91/15,644.87 = 2,638.72/x
  3. Step 3: Cross multiply
    10,429.91x = 15,644.87 × 2,638.72
  4. Step 4: Simplify right side
    10,429.91x = 41,282,431.37
  5. Step 5: Solve for x
    x = 41,282,431.37/10,429.91
  6. Step 6: Final answer
    x = 3,958.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.