Home / 21,258.12-31,871.55-10,722.96

Finding the Fourth Proportional to 21,258.12, 31,871.55 and 10,722.96

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Solution

The fourth proportional to 21,258.12, 31,871.55 and 10,722.96 is: 16,076.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.12 : 31,871.55 = 10,722.96 : x
  2. Step 2: Convert to fraction form
    21,258.12/31,871.55 = 10,722.96/x
  3. Step 3: Cross multiply
    21,258.12x = 31,871.55 × 10,722.96
  4. Step 4: Simplify right side
    21,258.12x = 341,757,355.79
  5. Step 5: Solve for x
    x = 341,757,355.79/21,258.12
  6. Step 6: Final answer
    x = 16,076.56

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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.