Home / 28,297.40-39,049.26-15,722.96

Finding the Fourth Proportional to 28,297.40, 39,049.26 and 15,722.96

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Solution

The fourth proportional to 28,297.40, 39,049.26 and 15,722.96 is: 21,697.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,297.40 : 39,049.26 = 15,722.96 : x
  2. Step 2: Convert to fraction form
    28,297.40/39,049.26 = 15,722.96/x
  3. Step 3: Cross multiply
    28,297.40x = 39,049.26 × 15,722.96
  4. Step 4: Simplify right side
    28,297.40x = 613,969,953.01
  5. Step 5: Solve for x
    x = 613,969,953.01/28,297.40
  6. Step 6: Final answer
    x = 21,697.04

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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.