Home / 28,297.84-39,049.92-15,723.40

Finding the Fourth Proportional to 28,297.84, 39,049.92 and 15,723.40

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Solution

The fourth proportional to 28,297.84, 39,049.92 and 15,723.40 is: 21,697.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,297.84 : 39,049.92 = 15,723.40 : x
  2. Step 2: Convert to fraction form
    28,297.84/39,049.92 = 15,723.40/x
  3. Step 3: Cross multiply
    28,297.84x = 39,049.92 × 15,723.40
  4. Step 4: Simplify right side
    28,297.84x = 613,997,512.13
  5. Step 5: Solve for x
    x = 613,997,512.13/28,297.84
  6. Step 6: Final answer
    x = 21,697.68

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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.