Home / 21,141.72-31,712.88-10,049.54

Finding the Fourth Proportional to 21,141.72, 31,712.88 and 10,049.54

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Solution

The fourth proportional to 21,141.72, 31,712.88 and 10,049.54 is: 15,074.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.72 : 31,712.88 = 10,049.54 : x
  2. Step 2: Convert to fraction form
    21,141.72/31,712.88 = 10,049.54/x
  3. Step 3: Cross multiply
    21,141.72x = 31,712.88 × 10,049.54
  4. Step 4: Simplify right side
    21,141.72x = 318,699,856.08
  5. Step 5: Solve for x
    x = 318,699,856.08/21,141.72
  6. Step 6: Final answer
    x = 15,074.45

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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.